/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES
   ========================================================================== */

:root {
    /* Fonts */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --font-playful: 'Fredoka', sans-serif;

    /* Light Theme Palette */
    --bg-app: #f9f9fb;
    --bg-card: #ffffff;
    --bg-card-hover: #fafafa;
    --text-main: #1a1a2e;
    --text-muted: #5e6b7e;
    --border-color: #1a1a1a;
    --border-width: 3px;
    --shadow-color: #1a1a1a;
    --overlay-color: rgba(26, 26, 46, 0.4);

    /* Harmonious HSL colors */
    --primary: #4dadf7;
    --primary-hover: #339af0;
    --secondary: #ff6b6b;
    --secondary-hover: #fa5252;
    --success: #37b24d;
    --warning: #fcc419;
    --purple: #ae3ec9;
    --info: #15aabf;
    --orange: #f76707;
    
    /* Layout */
    --radius-large: 20px;
    --radius-medium: 12px;
    --radius-small: 8px;
    --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-medium: 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --transition-slow: 0.5s cubic-bezier(0.8, 0, 0.2, 1);
}

/* Dark Theme Palette override */
.dark-mode {
    --bg-app: #12121e;
    --bg-card: #1d1d35;
    --bg-card-hover: #262644;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: #f3f4f6;
    --shadow-color: #05050a;
    
    --primary: #5c7cfa;
    --secondary: #ff8787;
    --success: #40c057;
    --warning: #ffd43b;
    --purple: #be4bdb;
    --info: #22b8cf;
    --orange: #ff922b;
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-app);
    color: var(--text-main);
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Utility Animations */
@keyframes pop-in {
    0% { transform: scale(0.9) translateY(10px); opacity: 0; }
    100% { transform: scale(1) translateY(0); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes spin-slow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==========================================================================
   BUTTONS & FORM ELEMENTS (NEOBRUTALISM STYLE)
   ========================================================================== */

.btn {
    font-family: var(--font-playful);
    font-size: 1rem;
    font-weight: 600;
    padding: 10px 18px;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-medium);
    cursor: pointer;
    background-color: var(--bg-card);
    color: var(--text-main);
    transition: var(--transition-fast);
    box-shadow: 4px 4px 0px var(--shadow-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    user-select: none;
    text-decoration: none;
}

.btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--shadow-color);
}

.btn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--shadow-color);
}

.btn-primary {
    background-color: var(--primary);
    color: #1a1a2e !important; /* Always readable black on bright yellow/blue */
}
.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--secondary);
    color: #ffffff;
}
.btn-secondary:hover {
    background-color: var(--secondary-hover);
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.25rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-playful);
    font-size: 0.75rem;
    font-weight: 600;
    min-height: 30px;
    padding: 5px 10px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    background-color: var(--warning);
    color: #1a1a2e;
    line-height: 1;
    white-space: nowrap;
}

.badge-secondary {
    background-color: var(--purple);
    color: #ffffff;
}

.badge-login {
    background-color: #e2e8f0;
    color: #1a1a2e;
}

.badge-login-no-student-login {
    background-color: #b2f2bb;
}

.badge-login-teacher-login {
    background-color: #a5d8ff;
}

.badge-login-student-account {
    background-color: #ffd8a8;
}

.badge-use-type {
    background-color: #e9ecef;
    color: #1a1a2e;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.app-header {
    background-color: var(--bg-card);
    border-bottom: var(--border-width) solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 12px 24px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.logo-area {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: 'Nunito', 'Arial Black', sans-serif;
    font-size: 2.25rem;
    font-weight: 900;
    letter-spacing: -1px;
    line-height: 1;
    color: #111;
}

.logo-dot {
    color: #FF4B1F;
}

.dark-mode .logo-text {
    color: #ffffff;
}

.stats-bar {
    display: flex;
    gap: 12px;
}

.stat-item {
    font-family: var(--font-playful);
    background-color: var(--bg-app);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-medium);
    padding: 6px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    box-shadow: 2px 2px 0px var(--shadow-color);
    cursor: default;
}

.stat-icon {
    font-size: 1.1rem;
}

.stat-value {
    font-weight: 700;
    color: var(--purple);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-spin {
    animation: float 5s ease-in-out infinite alternate;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
    max-width: 800px;
    margin: 40px auto 30px;
    text-align: center;
    padding: 0 20px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 12px;
}

.highlight-text {
    position: relative;
    z-index: 1;
    white-space: nowrap;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 100%;
    height: 12px;
    background-color: var(--warning);
    z-index: -1;
    transform: skewX(-10deg);
    opacity: 0.7;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ==========================================================================
   SEARCH & FILTERS
   ========================================================================== */

.controls-section {
    max-width: 1000px;
    margin: 0 auto 40px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-box-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-large);
    background-color: var(--bg-card);
    padding: 4px 16px;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: var(--transition-medium);
}

.search-box-wrapper:focus-within {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--shadow-color);
}

.search-icon {
    font-size: 1.2rem;
    margin-right: 12px;
}

#search-input {
    width: 100%;
    border: none;
    background: transparent;
    padding: 12px 0;
    font-size: 1.1rem;
    font-family: var(--font-primary);
    color: var(--text-main);
    outline: none;
}

#search-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.clear-btn {
    background: transparent;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
}

.clear-btn:hover {
    color: var(--secondary);
}

.filters-container {
    display: grid;
    gap: 0;
    background-color: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-large);
    padding: 8px 18px;
    box-shadow: 4px 4px 0px var(--shadow-color);
    overflow: hidden;
}

.filter-group {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: start;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 2px solid rgba(26, 26, 46, 0.08);
}

.filter-group:last-of-type {
    border-bottom: none;
}

.filter-title {
    font-family: var(--font-heading);
    font-weight: 700;
    min-width: 0;
    font-size: 0.95rem;
    line-height: 1.1;
    padding-top: 8px;
    color: var(--text-main);
}

.filter-buttons {
    display: flex;
    gap: 8px;
    row-gap: 10px;
    flex-wrap: wrap;
    overflow: visible;
    padding: 0;
}

.filter-btn {
    font-family: var(--font-playful);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 7px 13px;
    border: 2px solid var(--border-color);
    border-radius: 999px;
    background-color: var(--bg-app);
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 2px 2px 0px var(--shadow-color);
    white-space: nowrap;
    flex: 0 0 auto;
}

.filter-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--shadow-color);
}

.filter-btn.active {
    background-color: var(--primary);
    color: #1a1a2e;
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0px var(--shadow-color);
}

.sort-wrapper {
    display: grid;
    grid-template-columns: 120px minmax(180px, 220px);
    align-items: center;
    gap: 14px;
    padding: 12px 0;
}

.sort-select {
    font-family: var(--font-playful);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 999px;
    background-color: var(--bg-app);
    color: var(--text-main);
    outline: none;
    cursor: pointer;
    box-shadow: 2px 2px 0px var(--shadow-color);
}

/* ==========================================================================
   TOOLS GRID & CARD COMPONENT
   ========================================================================== */

.tools-grid-section {
    max-width: 1280px;
    margin: 0 auto 80px;
    padding: 0 24px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.tool-card {
    background-color: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-large);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: 6px 6px 0px var(--shadow-color);
    transition: var(--transition-medium);
    animation: pop-in 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cost-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 3;
    max-width: calc(100% - 20px);
    padding: 6px 10px;
    border: 2px solid var(--border-color);
    box-shadow: 2px 2px 0 var(--shadow-color);
    color: #1a1a2e;
    font-family: var(--font-playful);
    font-size: 0.68rem;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    border-radius: 999px;
    background-color: rgba(255, 255, 255, 0.9);
}

.cost-badge-free {
    background-color: #69db7c;
}

.cost-badge-freemium {
    background-color: #74c0fc;
}

.cost-badge-school {
    background-color: #91a7ff;
}

.cost-badge-trial {
    background-color: #ffd43b;
}

.cost-badge-paid {
    background-color: #ff8787;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 10px 10px 0px var(--shadow-color);
    background-color: var(--bg-card-hover);
}

/* Dynamic colors for tool card top visual areas based on subject classes */
.card-banner {
    height: 132px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: var(--border-width) solid var(--border-color);
    position: relative;
    overflow: hidden;
    user-select: none;
}

.card-banner::before {
    content: '';
    position: absolute;
    inset: 12px;
    border: 2px solid rgba(255, 255, 255, 0.16);
    border-radius: 18px;
    background:
        linear-gradient(135deg, rgba(255,255,255,0.18), rgba(255,255,255,0.04)),
        radial-gradient(circle at 20% 20%, rgba(255,255,255,0.22), transparent 34%);
}

.card-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.42;
    pointer-events: none;
}

/* Math banner */
.banner-math { background-color: var(--primary); }
/* Deutsch banner */
.banner-deutsch { background-color: var(--secondary); }
/* Sprachen banner */
.banner-sprachen { background-color: var(--warning); }
/* MINT banner */
.banner-mint { background-color: var(--success); }
/* Informatik banner */
.banner-info { background-color: var(--purple); }
/* Sonstige banner */
.banner-sonst { background-color: var(--orange); }

.card-logo-stage {
    width: min(78%, 190px);
    height: 82px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 0;
    transition: var(--transition-medium);
}

.card-logo-stage::before {
    content: '';
    position: absolute;
    inset: 12px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.28);
    filter: blur(14px);
    opacity: 0.95;
    transform: scale(1.08);
}

.card-banner-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    position: relative;
    z-index: 1;
    transform: scale(var(--logo-scale, 1));
    transform-origin: center;
    filter:
        drop-shadow(0px 1px 0px rgba(255, 255, 255, 0.58))
        drop-shadow(0px 7px 12px rgba(0, 0, 0, 0.28));
}

.tool-card:hover .card-logo-stage {
    transform: scale(1.12) rotate(3deg);
}

.card-logo-stage.logo-missing::after {
    content: '';
    width: 46px;
    height: 46px;
    display: block;
    border: 3px solid rgba(26, 26, 46, 0.24);
    border-radius: 14px;
    background-color: rgba(26, 26, 46, 0.08);
}

.tool-card-geogebra .card-logo-stage {
    width: 104px;
    height: 88px;
}

.tool-card-geogebra .card-banner::after {
    background:
        radial-gradient(circle at 18% 24%, rgba(97, 146, 203, 0.5) 0 5px, transparent 6px),
        radial-gradient(circle at 82% 32%, rgba(97, 146, 203, 0.48) 0 5px, transparent 6px),
        radial-gradient(circle at 68% 78%, rgba(97, 146, 203, 0.44) 0 5px, transparent 6px),
        linear-gradient(32deg, transparent 46%, rgba(97, 146, 203, 0.28) 47% 49%, transparent 50%),
        linear-gradient(148deg, transparent 43%, rgba(97, 146, 203, 0.22) 44% 46%, transparent 47%);
}

.tool-card-geogebra .card-banner-logo,
.tool-card-stellarium .card-banner-logo,
.tool-card-anton .card-banner-logo {
    max-width: 70px;
    max-height: 70px;
}

.tool-card-scratch .card-logo-stage {
    width: min(82%, 190px);
}

.tool-card-duolingo .card-banner::after {
    background:
        radial-gradient(circle at 16% 78%, rgba(255, 255, 255, 0.5) 0 16px, transparent 17px),
        radial-gradient(circle at 86% 18%, rgba(255, 255, 255, 0.42) 0 22px, transparent 23px),
        linear-gradient(120deg, transparent 0 38%, rgba(255, 255, 255, 0.22) 39% 47%, transparent 48%);
}

.tool-card-duolingo .card-logo-stage::before,
.tool-card-kahoot .card-logo-stage::before {
    inset: 8px -4px;
    background: rgba(255, 255, 255, 0.42);
    filter: blur(16px);
}

.tool-card-kahoot .card-banner-logo {
    filter:
        drop-shadow(0px 1px 0px rgba(255, 255, 255, 0.58))
        drop-shadow(0px 8px 14px rgba(0, 0, 0, 0.34));
}

.tool-card-duolingo .card-banner-logo {
    filter:
        drop-shadow(0px 1px 0px rgba(255, 255, 255, 0.78))
        drop-shadow(0px 7px 12px rgba(22, 101, 52, 0.34));
}

.tool-card-scratch .card-banner::after {
    background:
        linear-gradient(90deg, transparent 0 18px, rgba(255, 255, 255, 0.26) 18px 22px, transparent 22px 58px),
        linear-gradient(0deg, transparent 0 18px, rgba(255, 255, 255, 0.22) 18px 22px, transparent 22px 58px);
    background-size: 58px 58px;
    opacity: 0.28;
}

.tool-card-anton .card-banner::after {
    background:
        radial-gradient(circle at 18% 28%, rgba(255, 255, 255, 0.55) 0 12px, transparent 13px),
        radial-gradient(circle at 76% 72%, rgba(255, 255, 255, 0.42) 0 18px, transparent 19px),
        linear-gradient(135deg, transparent 0 44%, rgba(255, 255, 255, 0.28) 45% 52%, transparent 53%);
}

.tool-card-kahoot .card-banner::after {
    background:
        linear-gradient(45deg, rgba(255, 51, 85, 0.58) 0 24%, transparent 25%),
        linear-gradient(135deg, transparent 0 66%, rgba(255, 200, 0, 0.52) 67%),
        radial-gradient(circle at 82% 24%, rgba(38, 195, 236, 0.62) 0 18px, transparent 19px);
}

.tool-card-phet .card-logo-stage {
    width: min(84%, 210px);
    height: 92px;
}

.tool-card-phet .card-banner::after {
    background:
        radial-gradient(circle at 18% 72%, rgba(40, 124, 190, 0.34) 0 10px, transparent 11px),
        radial-gradient(circle at 84% 30%, rgba(255, 184, 0, 0.46) 0 16px, transparent 17px),
        radial-gradient(circle at 74% 78%, rgba(63, 168, 88, 0.32) 0 8px, transparent 9px),
        linear-gradient(25deg, transparent 0 47%, rgba(40, 124, 190, 0.22) 48% 50%, transparent 51%);
}

.tool-card-quizlet .card-banner::after {
    background:
        linear-gradient(160deg, rgba(255, 255, 255, 0.28) 0 18%, transparent 19% 100%),
        linear-gradient(20deg, transparent 0 62%, rgba(255, 255, 255, 0.2) 63% 72%, transparent 73%),
        radial-gradient(circle at 86% 22%, rgba(255, 205, 31, 0.5) 0 14px, transparent 15px);
}

.tool-card-stellarium .card-banner::after {
    background:
        radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.92) 0 1.5px, transparent 2px),
        radial-gradient(circle at 76% 24%, rgba(255, 255, 255, 0.78) 0 1px, transparent 1.5px),
        radial-gradient(circle at 84% 74%, rgba(255, 255, 255, 0.84) 0 1.5px, transparent 2px),
        radial-gradient(circle at 28% 78%, rgba(255, 255, 255, 0.68) 0 1px, transparent 1.5px),
        radial-gradient(circle at 58% 62%, rgba(147, 197, 253, 0.34) 0 28px, transparent 29px);
    opacity: 0.8;
}

.tool-card-mentimeter .card-banner::after {
    background:
        linear-gradient(90deg, transparent 0 18%, rgba(255, 255, 255, 0.34) 19% 24%, transparent 25%),
        linear-gradient(90deg, transparent 0 42%, rgba(255, 255, 255, 0.3) 43% 50%, transparent 51%),
        linear-gradient(90deg, transparent 0 72%, rgba(255, 255, 255, 0.28) 73% 80%, transparent 81%);
    opacity: 0.36;
}

.tool-card-padlet .card-banner::after {
    background:
        radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.44) 0 15px, transparent 16px),
        radial-gradient(circle at 74% 72%, rgba(255, 255, 255, 0.36) 0 18px, transparent 19px),
        linear-gradient(135deg, transparent 0 46%, rgba(255, 255, 255, 0.28) 47% 54%, transparent 55%);
}

.tool-card-canva .card-banner::after,
.tool-card-genially .card-banner::after {
    background:
        radial-gradient(circle at 20% 74%, rgba(255, 255, 255, 0.38) 0 20px, transparent 21px),
        radial-gradient(circle at 86% 20%, rgba(255, 255, 255, 0.34) 0 18px, transparent 19px),
        linear-gradient(120deg, transparent 0 38%, rgba(255, 255, 255, 0.22) 39% 46%, transparent 47%);
}

.tool-card-notebooklm .card-banner::after {
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.28) 0 2px, transparent 3px),
        linear-gradient(0deg, rgba(255, 255, 255, 0.22) 0 2px, transparent 3px);
    background-size: 38px 38px;
    opacity: 0.26;
}

.tool-card-mindmeister .card-banner::after {
    background:
        radial-gradient(circle at 26% 32%, rgba(255, 255, 255, 0.5) 0 7px, transparent 8px),
        radial-gradient(circle at 72% 30%, rgba(255, 255, 255, 0.42) 0 7px, transparent 8px),
        radial-gradient(circle at 50% 76%, rgba(255, 255, 255, 0.38) 0 7px, transparent 8px),
        linear-gradient(28deg, transparent 45%, rgba(255, 255, 255, 0.2) 46% 48%, transparent 49%);
}

.tool-card-spyfall .card-banner::after {
    background:
        radial-gradient(circle at 50% 46%, rgba(255, 255, 255, 0.34) 0 20px, transparent 21px),
        linear-gradient(110deg, transparent 0 42%, rgba(0, 0, 0, 0.24) 43% 54%, transparent 55%);
}

.tool-card-skribbl .card-banner::after {
    background:
        linear-gradient(160deg, transparent 0 44%, rgba(255, 255, 255, 0.28) 45% 48%, transparent 49%),
        radial-gradient(circle at 82% 24%, rgba(255, 255, 255, 0.36) 0 18px, transparent 19px);
}

.tool-card-geoguessr .card-banner::after {
    background:
        radial-gradient(circle at 24% 72%, rgba(255, 255, 255, 0.38) 0 18px, transparent 19px),
        radial-gradient(circle at 76% 28%, rgba(255, 255, 255, 0.32) 0 13px, transparent 14px),
        linear-gradient(28deg, transparent 0 45%, rgba(255, 255, 255, 0.22) 46% 52%, transparent 53%);
}

.tool-card-wiki-game .card-banner::after {
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.28) 0 1px, transparent 2px),
        linear-gradient(0deg, rgba(255, 255, 255, 0.22) 0 1px, transparent 2px);
    background-size: 34px 34px;
    opacity: 0.36;
}

.tool-card-mentimeter .card-logo-stage,
.tool-card-padlet .card-logo-stage,
.tool-card-canva .card-logo-stage,
.tool-card-genially .card-logo-stage,
.tool-card-notebooklm .card-logo-stage,
.tool-card-mindmeister .card-logo-stage,
.tool-card-spyfall .card-logo-stage,
.tool-card-skribbl .card-logo-stage,
.tool-card-geoguessr .card-logo-stage,
.tool-card-wiki-game .card-logo-stage {
    width: 86px;
    height: 86px;
}

.tool-card-mentimeter .card-banner-logo,
.tool-card-padlet .card-banner-logo,
.tool-card-canva .card-banner-logo,
.tool-card-genially .card-banner-logo,
.tool-card-notebooklm .card-banner-logo,
.tool-card-mindmeister .card-banner-logo,
.tool-card-spyfall .card-banner-logo,
.tool-card-skribbl .card-banner-logo,
.tool-card-geoguessr .card-banner-logo,
.tool-card-wiki-game .card-banner-logo {
    max-width: 58px;
    max-height: 58px;
}

.card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-tags {
    display: flex;
    align-items: center;
    gap: 6px;
    min-height: 30px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    flex-grow: 1;
    margin-bottom: 16px;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.btn-like {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--font-playful);
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.btn-like:hover {
    color: var(--secondary);
    transform: scale(1.1);
}

.btn-like.liked {
    color: var(--secondary);
}

.btn-like.liked .like-heart {
    animation: float 0.6s ease;
    content: "❤️";
}

/* No results state */
.no-results-card {
    text-align: center;
    padding: 60px 20px;
    background-color: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-large);
    box-shadow: 4px 4px 0px var(--shadow-color);
    max-width: 500px;
    margin: 40px auto;
}

.no-results-emoji {
    font-size: 4rem;
    margin-bottom: 12px;
}

.no-results-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.no-results-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.app-footer {
    text-align: center;
    padding: 28px 20px 36px;
}

.app-footer p {
    max-width: 760px;
    margin: 0 auto;
    color: var(--text-muted);
}

/* ==========================================================================
   MODAL DIALOG COMPONENT
   ========================================================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--overlay-color);
    backdrop-filter: blur(8px);
}

.modal-container {
    background-color: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-large);
    width: 90%;
    max-width: 860px;
    max-height: 92vh;
    box-shadow: 10px 10px 0px var(--shadow-color);
    position: relative;
    z-index: 1001;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background-color: var(--bg-app);
    color: var(--text-main);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background-color: var(--secondary);
    color: white;
    transform: rotate(90deg);
}

.modal-content {
    display: flex;
    height: auto;
    max-height: 92vh;
}

.modal-content-info {
    height: auto;
    min-height: 0;
}

.modal-info-panel {
    flex: 1;
    padding: 28px;
    overflow: visible;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-widget-panel {
    flex: 3;
    padding: 24px;
    background-color: var(--bg-app);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.modal-badge-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.modal-title-text {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.05;
}

.modal-subtitle-text {
    font-size: 1rem;
    color: var(--text-muted);
}

.modal-body-text h3 {
    font-family: var(--font-heading);
    font-size: 0.98rem;
    margin-bottom: 4px;
}

.modal-body-text p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.45;
    margin-bottom: 0;
}

.tool-profile-section {
    margin-bottom: 12px;
}

.tool-profile-section h3 {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-profile-list {
    color: var(--text-muted);
    display: grid;
    gap: 4px;
    list-style-position: outside;
    margin-left: 20px;
    font-size: 0.88rem;
    line-height: 1.35;
}

.tool-profile-list li::marker {
    color: var(--primary);
}

.modal-meta-box {
    background-color: var(--bg-app);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-medium);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.meta-item {
    display: grid;
    grid-template-columns: 22px 96px 1fr;
    align-items: start;
    gap: 8px;
    font-size: 0.82rem;
    line-height: 1.35;
}

.meta-label {
    font-weight: 600;
    color: var(--text-muted);
}

.meta-val {
    color: var(--text-main);
    font-weight: 700;
}

.modal-actions {
    display: flex;
    flex-direction: row;
    gap: 10px;
    margin-top: auto;
}

.modal-actions .btn {
    flex: 1;
    min-width: 0;
    padding: 9px 14px;
    font-size: 0.95rem;
}

/* Widget Container design */
.widget-header {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
}

.widget-header-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
}

.widget-header-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.widget-body {
    flex-grow: 1;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-medium);
    padding: 16px;
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 320px;
    box-shadow: inset 2px 2px 5px rgba(0,0,0,0.05);
}

/* Small modal (wheel of fortune) */
.modal-small {
    max-width: 480px;
}

.modal-content-wheel {
    padding: 30px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.modal-content-wheel h2 {
    font-family: var(--font-heading);
    font-weight: 800;
}

.wheel-wrapper {
    position: relative;
    margin: 10px 0;
}

.wheel-pointer {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.8rem;
    color: var(--secondary);
    z-index: 10;
    text-shadow: 2px 2px 0 var(--border-color);
}

#wheel-canvas {
    border: var(--border-width) solid var(--border-color);
    border-radius: 50%;
    box-shadow: 4px 4px 0 var(--shadow-color);
    background-color: var(--bg-card);
    max-width: 100%;
    height: auto;
}

.wheel-actions {
    width: 100%;
}

.btn-large {
    padding: 14px 28px;
    font-size: 1.15rem;
    width: 100%;
}

/* ==========================================================================
   INTERACTIVE WIDGET COMPONENT CUSTOM STYLES
   ========================================================================== */

/* 1. MATH CALCULATOR / ANTON WIDGET */
.math-widget-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    height: 100%;
    flex-grow: 1;
}

.math-question {
    font-family: var(--font-playful);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
}

.math-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
}

.btn-math-opt {
    font-family: var(--font-playful);
    font-size: 1.5rem;
    padding: 15px;
}

.math-score-bar {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-family: var(--font-playful);
    font-size: 1.1rem;
    font-weight: 700;
}

.math-timer-track {
    width: 100%;
    height: 12px;
    background-color: var(--bg-app);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.math-timer-fill {
    height: 100%;
    background-color: var(--secondary);
    width: 100%;
    transition: width 0.1s linear;
}

/* 2. GEOGEBRA PLOTTER WIDGET */
.plotter-widget-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: 100%;
    flex-grow: 1;
}

.plotter-canvas-wrapper {
    position: relative;
    flex-grow: 1;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-small);
    overflow: hidden;
    background-color: #fafafc;
}

#plotter-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.plotter-controls {
    display: flex;
    gap: 8px;
}

.plotter-input {
    flex-grow: 1;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-small);
    background-color: var(--bg-app);
    color: var(--text-main);
    outline: none;
}

.plotter-presets {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.btn-preset {
    font-family: var(--font-playful);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 40px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-app);
    cursor: pointer;
}

.btn-preset:hover {
    background-color: var(--primary);
}

/* 3. DUOLINGO VOCABULARY MATCH WIDGET */
.vocab-widget-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 12px;
}

.vocab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    flex-grow: 1;
}

.vocab-card {
    font-family: var(--font-playful);
    font-size: 0.95rem;
    font-weight: 700;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-small);
    background-color: var(--bg-app);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
    padding: 10px;
    user-select: none;
    box-shadow: 2px 2px 0 var(--border-color);
}

.vocab-card:hover {
    transform: translateY(-2px);
    box-shadow: 3px 3px 0 var(--border-color);
}

.vocab-card.selected {
    background-color: var(--primary);
    color: #1a1a2e;
    transform: scale(0.98);
}

.vocab-card.matched {
    background-color: var(--success);
    color: white;
    visibility: hidden; /* Becomes invisible but keeps space, or animated out */
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.vocab-card.error {
    background-color: var(--secondary);
    color: white;
    animation: shake 0.3s ease;
}

.vocab-completion-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    gap: 10px;
    animation: pop-in 0.3s ease;
}

.vocab-completion-emoji {
    font-size: 4rem;
}

/* 4. SCRATCH CODE PUZZLES WIDGET */
.scratch-widget-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 12px;
}

.scratch-workspace {
    display: flex;
    gap: 12px;
    flex-grow: 1;
    min-height: 200px;
}

.scratch-blocks-bin, .scratch-program-flow {
    flex: 1;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-small);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    background-color: var(--bg-app);
}

.scratch-program-flow {
    border-style: solid;
    background-color: var(--bg-card);
}

.scratch-bin-header, .scratch-flow-header {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 4px;
    margin-bottom: 4px;
}

.scratch-block {
    font-family: var(--font-playful);
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    user-select: none;
    box-shadow: 2px 2px 0 var(--border-color);
    transition: var(--transition-fast);
}

.scratch-block:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0 var(--border-color);
}

.block-repeat { background-color: var(--orange); }
.block-move { background-color: var(--primary); }
.block-turn { background-color: var(--purple); }

.scratch-preview-canvas {
    height: 100px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-small);
    background-color: #f0f3f9;
    position: relative;
    overflow: hidden;
}

.scratch-actor {
    position: absolute;
    font-size: 1.5rem;
    transition: left 0.5s ease, top 0.5s ease, transform 0.5s ease;
    transform-origin: center;
}

.scratch-goal {
    position: absolute;
    font-size: 1.5rem;
}

/* 5. KAHOOT TRIVIA QUIZ WIDGET */
.kahoot-widget-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 14px;
}

.kahoot-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.kahoot-question-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    text-align: center;
    padding: 10px 0;
}

.kahoot-timer-ring {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 3px solid var(--border-color);
    background-color: var(--purple);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-playful);
    font-weight: 700;
    font-size: 1.1rem;
}

.kahoot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    flex-grow: 1;
}

.btn-kahoot-opt {
    border: 3px solid var(--border-color);
    border-radius: var(--radius-medium);
    font-family: var(--font-playful);
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    box-shadow: 4px 4px 0 var(--border-color);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    padding-left: 20px;
    gap: 12px;
}

.btn-kahoot-opt:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--border-color);
}

.kahoot-triangle { background-color: var(--secondary); }
.kahoot-diamond { background-color: var(--primary); }
.kahoot-circle { background-color: var(--warning); color: #1a1a2e; }
.kahoot-square { background-color: var(--success); }

/* 6. PHET SIMULATIONS LEVER BALANCE WIDGET */
.phet-widget-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 16px;
    align-items: center;
}

.phet-balance-area {
    position: relative;
    width: 100%;
    height: 180px;
    border: 1px solid rgba(0,0,0,0.05);
    background-color: #fafbfc;
    border-radius: var(--radius-small);
    overflow: hidden;
}

.phet-lever-beam {
    position: absolute;
    top: 100px;
    left: 10%;
    width: 80%;
    height: 12px;
    background-color: var(--orange);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    transform-origin: center;
    transition: transform 0.4s ease;
}

.phet-fulcrum {
    position: absolute;
    top: 110px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 35px solid var(--border-color);
}

.phet-weight {
    position: absolute;
    bottom: 12px;
    width: 32px;
    height: 32px;
    background-color: var(--purple);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    color: white;
    font-family: var(--font-playful);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s ease, left 0.4s ease;
}

.phet-weight-left {
    left: calc(25% - 16px);
    transform-origin: center bottom;
}

.phet-weight-right {
    left: calc(75% - 16px);
    transform-origin: center bottom;
}

.phet-labels {
    position: absolute;
    top: 65px;
    left: 10%;
    width: 80%;
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
}

.phet-controls {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.phet-control-row {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
}

.phet-slider-label {
    min-width: 120px;
    font-weight: 600;
}

.phet-slider {
    flex-grow: 1;
    accent-color: var(--primary);
    cursor: pointer;
}

/* 7. QUIZLET FLASHCARD WIDGET */
.quizlet-widget-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.quizlet-card-scene {
    width: 100%;
    height: 180px;
    perspective: 600px;
    cursor: pointer;
}

.quizlet-card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-style: preserve-3d;
    border: 3px solid var(--border-color);
    border-radius: var(--radius-large);
    box-shadow: 4px 4px 0 var(--shadow-color);
}

.quizlet-card-scene.is-flipped .quizlet-card-inner {
    transform: rotateY(180deg);
}

.quizlet-card-front, .quizlet-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    font-family: var(--font-playful);
    border-radius: calc(var(--radius-large) - 3px);
}

.quizlet-card-front {
    background-color: var(--bg-card);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

.quizlet-card-back {
    background-color: var(--primary);
    font-size: 1.4rem;
    font-weight: 600;
    color: #1a1a2e;
    transform: rotateY(180deg);
}

.quizlet-card-hint {
    position: absolute;
    bottom: 8px;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-primary);
}

.quizlet-controls {
    display: flex;
    gap: 8px;
    width: 100%;
}

.quizlet-progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-app);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.quizlet-progress-fill {
    height: 100%;
    background-color: var(--success);
    width: 0%;
    transition: width 0.3s ease;
}

/* 8. STELLARIUM STAR CONSTELLATION WIDGET */
.sky-widget-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 12px;
}

.sky-canvas-wrapper {
    flex-grow: 1;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-small);
    background-color: #0b0b1a;
    overflow: hidden;
    position: relative;
}

#sky-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.sky-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.btn-sky-opt {
    font-family: var(--font-playful);
    font-size: 0.85rem;
    padding: 10px;
}


/* ==========================================================================
   RESPONSIVE LAYOUTS
   ========================================================================== */

@media (max-width: 900px) {
    .modal-content {
        flex-direction: column;
        height: auto;
        max-height: 92vh;
    }
    
    .modal-info-panel {
        flex: none;
    }

    .modal-widget-panel {
        flex: none;
    }
}

@media (max-width: 768px) {
    .logo-text {
        font-size: 1.85rem;
    }
    
    .stats-bar {
        width: 100%;
        justify-content: space-between;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .filter-group {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .filters-container {
        padding: 8px 14px;
    }

    .filter-title {
        padding-top: 0;
    }

    .sort-wrapper {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .modal-container {
        max-height: 94vh;
    }

    .modal-info-panel {
        padding: 24px 18px;
    }

    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .header-controls {
        width: 100%;
        justify-content: space-between;
    }

    .btn-spin {
        flex-grow: 1;
    }
}