:root {
    --primary-color: #00d2ff;
    --secondary-color: #3a7bd5;
    --bg-color: #0f172a;
    --text-color: #f1f5f9;
    --accent-color: #f472b6;
    --card-bg: #1e293b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 100px;
}

#top-datetime-bar {
    position: fixed;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(30, 41, 59, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 210, 255, 0.3);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    white-space: nowrap;
    transition: all 0.3s ease;
    width: auto;
    max-width: 95%;
}

#current-day-name {
    font-weight: 800;
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

#current-date-full {
    font-size: 0.85rem;
    color: #94a3b8;
    border-right: 1px solid rgba(51, 65, 85, 0.5);
    border-left: 1px solid rgba(51, 65, 85, 0.5);
    padding: 0 1rem;
}

#current-time-clock {
    font-family: 'JetBrains Mono', 'Monospace', monospace;
    font-weight: 700;
    color: var(--text-color);
    font-size: 1rem;
    min-width: 100px;
    text-align: center;
}

/* Floating Compass */
#floating-compass {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 80px;
    height: 80px;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(8px);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    z-index: 999;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.3);
    cursor: pointer;
    transition: transform 0.3s ease;
}

#floating-compass:hover {
    transform: scale(1.1);
}

.compass-dial {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.compass-needle {
    position: absolute;
    width: 4px;
    height: 60%;
    background: linear-gradient(to bottom, #ef4444 50%, #f1f5f9 50%);
    border-radius: 2px;
    transform-origin: center;
    transition: transform 0.1s ease-out;
}

.compass-mark {
    position: absolute;
    font-size: 0.6rem;
    font-weight: 900;
    color: #94a3b8;
}

.mark-n { top: 5px; color: #ef4444; }
.mark-e { right: 5px; }
.mark-s { bottom: 5px; }
.mark-w { left: 5px; }

header#hero {
    position: relative;
    height: calc(100vh - 100px);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

#threejs-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-content {
    z-index: 1;
    pointer-events: none;
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.main-title {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 900;
    letter-spacing: -2px;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px rgba(0, 210, 255, 0.3));
}

.slogan {
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 300;
    color: #94a3b8;
    max-width: 800px;
    margin: 0 auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.category-card {
    background: var(--card-bg);
    border: 1px solid #334155;
    padding: 2.5rem;
    border-radius: 1rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Category Colors */
.category-card[data-category="media"] { --card-accent: #ff0000; }
.category-card[data-category="excel"] { --card-accent: #217346; }
.category-card[data-category="image_studio"] { --card-accent: #f472b6; }
.category-card[data-category="pdf"] { --card-accent: #f87171; }
.category-card[data-category="video_audio"] { --card-accent: #8b5cf6; }
.category-card[data-category="calculators"] { --card-accent: #3b82f6; }
.category-card[data-category="web_gaming"] { --card-accent: #10b981; }
.category-card[data-category="global_weather"] { --card-accent: #f59e0b; }
.category-card[data-category="shortcuts_formulas"] { --card-accent: #8b5cf6; }

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--card-accent, var(--primary-color));
}

.category-card .icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 0 10px var(--card-accent, transparent));
}

.category-card:hover .icon {
    transform: scale(1.2) rotate(5deg);
}

.category-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--card-accent, var(--text-color));
}

.category-card p {
    color: #94a3b8;
    font-size: 0.95rem;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, var(--card-accent, rgba(0, 210, 255, 0.1)), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.category-card:hover::before {
    opacity: 1;
}

.view-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.btn-back {
    background: var(--card-bg);
    border: 1px solid #334155;
    color: var(--text-color);
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.btn-back:hover {
    background: var(--secondary-color);
    border-color: var(--primary-color);
    transform: translateX(-5px);
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid #334155;
    padding: 2rem;
    border-radius: 1rem;
    text-align: left;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tool-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 210, 255, 0.1);
}

.tool-card .tool-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.tool-card h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.tool-card p {
    font-size: 0.9rem;
    color: #94a3b8;
}

.tool-content-area {
    background: var(--card-bg);
    border: 1px solid #334155;
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* Font Generator Specific Styles */
.font-gen-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.input-group label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.font-input {
    background: #0f172a;
    border: 1px solid #334155;
    padding: 1.2rem;
    border-radius: 0.8rem;
    color: var(--text-color);
    font-size: 1.2rem;
    transition: border-color 0.3s ease;
}

.font-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.font-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.font-card {
    background: #1e293b;
    border: 1px solid #334155;
    padding: 1.5rem;
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.3s ease;
}

.font-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.font-preview {
    font-size: 1.5rem;
    word-break: break-all;
    min-height: 2.5rem;
}

.copy-btn {
    align-self: flex-end;
    background: var(--secondary-color);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

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

.copy-btn.copied {
    background: #10b981;
}

/* Photo Merger Workspace */
.merger-workspace {
    position: relative;
    width: 100%;
    height: 500px;
    background: #020617;
    border: 2px dashed #334155;
    border-radius: 1rem;
    overflow: hidden;
    margin-top: 1rem;
}

#merger-canvas-container {
    width: 100%;
    height: 100%;
    cursor: crosshair;
}

.merger-controls {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
    background: #1e293b;
    padding: 1.5rem;
    border-radius: 1rem;
}

.layer-item {
    background: #0f172a;
    padding: 0.8rem;
    border-radius: 0.5rem;
    border: 1px solid #334155;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.layer-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.layer-btn {
    background: #334155;
    border: none;
    color: white;
    padding: 0.3rem 0.6rem;
    border-radius: 0.3rem;
    cursor: pointer;
    font-size: 0.75rem;
}

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

.layer-btn.delete {
    background: #ef4444;
}

.workspace-hint {
    position: absolute;
    bottom: 10px;
    right: 10px;
    color: #64748b;
    font-size: 0.8rem;
    pointer-events: none;
}

/* Common Tool UI Elements */
.tool-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--primary-color);
}

.form-control {
    background: #0f172a;
    border: 1px solid #334155;
    padding: 1rem;
    border-radius: 0.8rem;
    color: var(--text-color);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 0.8rem;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.4);
}

.result-area {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #0f172a;
    border-radius: 0.8rem;
    border: 1px dashed var(--primary-color);
    min-height: 50px;
    text-align: center;
    word-break: break-all;
}

.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.shortcut-card {
    background: #0f172a;
    padding: 1rem;
    border-radius: 0.8rem;
    border: 1px solid #334155;
}

.shortcut-key {
    background: #334155;
    padding: 0.2rem 0.5rem;
    border-radius: 0.4rem;
    color: var(--primary-color);
    font-family: monospace;
}

/* Calculator Styles */
.calculator-container {
    background: #0f172a;
    padding: 1.5rem;
    border-radius: 1.5rem;
    border: 1px solid #334155;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.calc-display {
    background: #1e293b;
    padding: 1.5rem;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    text-align: right;
    border: 1px solid #334155;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 0.5rem;
    overflow: hidden;
}

#calc-history {
    font-size: 0.9rem;
    color: #64748b;
    min-height: 1.2rem;
    word-break: break-all;
}

#calc-main-display {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    word-break: break-all;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
}

.calc-grid.scientific {
    grid-template-columns: repeat(5, 1fr);
}

.calc-btn {
    background: #1e293b;
    border: 1px solid #334155;
    color: var(--text-color);
    padding: 1.2rem;
    border-radius: 0.8rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calc-btn:hover {
    background: #334155;
    transform: translateY(-2px);
    border-color: var(--primary-color);
}

.calc-btn.operator {
    color: var(--primary-color);
    background: rgba(0, 210, 255, 0.05);
}

.calc-btn.scientific-op {
    color: var(--accent-color);
    background: rgba(244, 114, 182, 0.05);
    font-size: 0.9rem;
}

.calc-btn.equals {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    grid-column: span 2;
}

.calc-btn.clear {
    color: #ef4444;
}

@media (max-width: 480px) {
    .calc-grid.scientific {
        grid-template-columns: repeat(4, 1fr);
    }
    .calc-btn {
        padding: 0.8rem;
        font-size: 1rem;
    }
}

/* Speed Test Styles */
.speed-test-container {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.speed-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-box {
    background: #1e293b;
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid #334155;
    transition: all 0.3s ease;
}

.stat-box.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.2);
}

.stat-label {
    color: #94a3b8;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-unit {
    font-size: 1rem;
    color: #64748b;
}

.chart-container {
    background: #0f172a;
    padding: 1.5rem;
    border-radius: 1.5rem;
    border: 1px solid #334155;
    margin-top: 2rem;
    height: 300px;
}

.speed-gauge {
    width: 200px;
    height: 200px;
    margin: 2rem auto;
    position: relative;
    border-radius: 50%;
    border: 10px solid #1e293b;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle at center, rgba(0, 210, 255, 0.1), transparent);
}

.gauge-needle {
    position: absolute;
    width: 2px;
    height: 80px;
    background: var(--primary-color);
    bottom: 50%;
    left: 50%;
    transform-origin: bottom;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px var(--primary-color);
}

/* Weather & Map Tool Enhancements */
.font-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.instruction-box {
    background: rgba(0, 210, 255, 0.05);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--primary-color);
    text-align: left;
}

#map-container {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1; /* Ensure Leaflet controls are above background but below date bar */
}

/* Ensure Chart.js canvas fits well */
.chart-container canvas {
    max-width: 100%;
}

@media (max-width: 768px) {
    #w-temp { font-size: 3.5rem !important; }
    #w-city { font-size: 1.5rem !important; }
    #map-container { height: 350px !important; }
}

/* Leaflet Overrides */
.leaflet-container {
    font-family: inherit;
    background: #0f172a;
}
.leaflet-control-zoom {
    border: none !important;
}
.leaflet-bar a {
    background: #1e293b !important;
    color: var(--primary-color) !important;
    border: 1px solid #334155 !important;
}

@media (max-width: 480px) {
    #floating-compass {
        bottom: 10px;
        right: 10px;
    }
}

#live-status-bar {
    position: fixed;
    top: 75px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 999;
    padding: 0.5rem;
    transition: all 0.3s ease;
}

.status-pill {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(51, 65, 85, 0.4);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #94a3b8;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: border-color 0.3s ease;
}

.status-pill:hover {
    border-color: var(--primary-color);
}

.status-icon {
    font-size: 0.9rem;
}

#live-ip, #live-isp, #live-geo {
    font-weight: 600;
    color: var(--text-color);
}

@media (max-width: 768px) {
    #live-status-bar {
        top: 65px;
        gap: 0.5rem;
    }
    .status-pill {
        padding: 0.3rem 0.8rem;
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    #live-status-bar {
        display: none; /* Hide for extreme mobile to avoid clutter */
    }
    body {
        padding-top: 140px;
    }
}

/* Shortcut Keys Styles */
.shortcut-categories {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.2rem;
}

.shortcut-card {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid rgba(51, 65, 85, 0.5);
    padding: 1.5rem;
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.3s ease;
}

.shortcut-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    background: rgba(30, 41, 59, 0.6);
}

.shortcut-key-wrap {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.shortcut-key {
    background: #1e293b;
    color: var(--primary-color);
    padding: 0.3rem 0.6rem;
    border-radius: 0.4rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 0.85rem;
    border-bottom: 3px solid #0f172a;
    box-shadow: 0 4px 0 #0f172a;
}

.shortcut-plus {
    color: #64748b;
    font-weight: 700;
    font-size: 0.9rem;
}

.shortcut-desc {
    color: #f1f5f9;
    font-size: 0.95rem;
    font-weight: 500;
    margin: 0;
}

footer {
    padding: 3rem;
    text-align: center;
    border-top: 1px solid #1e293b;
    color: #64748b;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    #top-datetime-bar {
        padding: 0.5rem 1rem;
        gap: 0.6rem;
        top: 10px;
    }
    
    #current-day-name { font-size: 0.65rem; }
    #current-date-full { font-size: 0.75rem; padding: 0 0.6rem; }
    #current-time-clock { font-size: 0.85rem; min-width: 80px; }
    
    .container { padding: 2rem 1rem; }
    .section-title { font-size: 2rem; margin-bottom: 2rem; }
    
    .tool-content-area { padding: 1.5rem; }
    
    #floating-compass {
        bottom: 20px;
        right: 20px;
        width: 60px;
        height: 60px;
    }

    .main-title {
        font-size: 4rem;
    }
}

@media (max-width: 480px) {
    #top-datetime-bar {
        flex-direction: column;
        border-radius: 15px;
        padding: 0.8rem;
        gap: 0.3rem;
    }
    
    #current-date-full {
        border: none;
        padding: 0;
    }
    
    body {
        padding-top: 140px;
    }
}