:root {
    --bg-color: #FDFBF7;
    --primary: #FF6B6B;
    --secondary: #4ECDC4;
    --accent: #FFE66D;
    --dark: #1A1A1A;
    --border: 3px solid var(--dark);
    --shadow: 6px 6px 0px 0px var(--dark);
    --shadow-hover: 2px 2px 0px 0px var(--dark);
    --font-main: 'Space Grotesk', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    background-image: radial-gradient(var(--dark) 1.5px, transparent 1.5px);
    background-size: 24px 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    color: var(--dark);
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--accent);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.splash-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.splash-content {
    text-align: center;
}

.splash-logo {
    font-size: 80px;
    animation: bounce 1s infinite alternate cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounce {
    from { transform: translateY(0) rotate(-5deg); }
    to { transform: translateY(-25px) rotate(5deg); }
}

.splash-content h1 {
    font-size: 36px;
    font-weight: 700;
    margin-top: 20px;
    color: var(--dark);
    letter-spacing: -1px;
}

.loading-bar {
    width: 220px;
    height: 14px;
    background: var(--dark);
    border: var(--border);
    margin: 30px auto 0;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
}

.loading-progress {
    width: 0%;
    height: 100%;
    background: var(--primary);
    animation: load 2.2s ease-in-out forwards;
}

@keyframes load {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* Onboarding Screen */
.onboarding-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(26, 26, 26, 0.85);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9998;
    padding: 20px;
}

.onboarding-card {
    background: var(--bg-color);
    border: var(--border);
    box-shadow: 8px 8px 0px 0px var(--dark);
    border-radius: 20px;
    padding: 40px;
    max-width: 520px;
    width: 100%;
    text-align: center;
    animation: slideUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUp {
    from { transform: translateY(60px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.onboarding-header h2 {
    font-size: 32px;
    margin-bottom: 12px;
    font-weight: 700;
}

.onboarding-header p {
    color: #555;
    margin-bottom: 35px;
    font-size: 16px;
    line-height: 1.5;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 35px;
    text-align: left;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #F4F4F0;
    border: var(--border);
    padding: 16px;
    border-radius: 12px;
    transition: transform 0.2s ease;
}

.feature-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0px 0px var(--dark);
}

.feature-icon {
    font-size: 28px;
    background: var(--accent);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: var(--border);
    border-radius: 10px;
    flex-shrink: 0;
}

.feature-item h3 {
    font-size: 17px;
    margin-bottom: 4px;
    font-weight: 700;
}

.feature-item p {
    font-size: 14px;
    color: #555;
    line-height: 1.4;
}

/* Main App Header */
.app-header {
    text-align: center;
    margin-bottom: 40px;
    background: var(--bg-color);
    padding: 24px;
    border: var(--border);
    box-shadow: var(--shadow);
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    transition: all 0.2s ease;
}

.app-header:hover {
    transform: translate(-2px, -2px);
    box-shadow: 8px 8px 0px 0px var(--dark);
}

.app-header h1 {
    font-size: 32px;
    margin-bottom: 10px;
    color: var(--dark);
    font-weight: 700;
}

.app-header p {
    color: #555;
    font-size: 16px;
    font-weight: 600;
}

.container {
    max-width: 800px;
    width: 100%;
}

/* Upload Area */
.upload-area {
    background: var(--secondary);
    border: var(--border);
    box-shadow: var(--shadow);
    border-radius: 20px;
    padding: 60px 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 30px;
}

.upload-area:hover, .upload-area.dragover {
    transform: translate(4px, 4px);
    box-shadow: var(--shadow-hover);
    background: #45b7af;
}

.upload-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.upload-area h3 {
    font-size: 24px;
    margin-bottom: 8px;
    font-weight: 700;
}

.upload-area p {
    color: var(--dark);
    font-size: 15px;
    margin-bottom: 24px;
    font-weight: 600;
    opacity: 0.8;
}

.upload-btn {
    display: inline-block;
    background: var(--primary);
    color: var(--dark);
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    border: var(--border);
    box-shadow: 4px 4px 0px 0px var(--dark);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.upload-btn:active {
    transform: translate(4px, 4px);
    box-shadow: 0px 0px 0px 0px var(--dark);
}

#fileInput {
    display: none;
}

/* Sections General */
.video-section, .processing, .result-section {
    background: var(--bg-color);
    border: var(--border);
    box-shadow: var(--shadow);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    display: none;
}

.video-section.active, .processing.active, .result-section.active {
    display: block;
    animation: slideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: var(--border);
    padding-bottom: 12px;
}

.video-wrapper {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: var(--dark);
    margin-bottom: 20px;
    border: var(--border);
}

video {
    width: 100%;
    max-height: 450px;
    display: block;
}

.video-info {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    color: var(--dark);
    font-size: 14px;
    font-weight: 700;
}

.video-info span {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    padding: 8px 16px;
    border: var(--border);
    border-radius: 10px;
}

/* Processing */
.processing {
    text-align: center;
    padding: 60px 30px;
    background: var(--accent);
}

.spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--dark);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 24px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.processing h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.processing p {
    font-weight: 600;
    opacity: 0.8;
}

/* Result */
.result-image-wrapper {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 28px;
    border: var(--border);
    box-shadow: 4px 4px 0px 0px var(--dark);
}

.result-image-wrapper img {
    width: 100%;
    display: block;
}

.result-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--dark);
    color: var(--bg-color);
    padding: 16px 24px;
    border-top: var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-overlay .label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: 0.8;
    font-weight: 700;
}

.result-overlay .value {
    font-size: 22px;
    font-weight: 700;
    color: var(--secondary);
    font-family: monospace;
}

/* Buttons */
.actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border: var(--border);
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: var(--dark);
    box-shadow: 4px 4px 0px 0px var(--dark);
}

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

.btn:active {
    transform: translate(4px, 4px);
    box-shadow: 0px 0px 0px 0px var(--dark);
}

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

.btn-secondary {
    background: var(--secondary);
}

.btn-large {
    width: 100%;
    justify-content: center;
    font-size: 18px;
    padding: 18px;
    margin-top: 10px;
}

.btn svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--dark);
    color: var(--bg-color);
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    border: var(--border);
    border-color: var(--bg-color);
    box-shadow: 6px 6px 0px 0px var(--primary);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 10000;
    white-space: nowrap;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.error {
    background: var(--primary);
    color: var(--dark);
    box-shadow: 6px 6px 0px 0px var(--dark);
    border-color: var(--dark);
}

/* Hidden canvas */
#captureCanvas {
    display: none;
}

/* Footer */
.app-footer {
    margin-top: auto;
    padding: 40px 20px 20px;
    text-align: center;
    color: #555;
    font-size: 14px;
    font-weight: 600;
    width: 100%;
    max-width: 800px;
    border-top: 2px dashed var(--dark);
}

.app-footer a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 700;
    background: var(--accent);
    padding: 2px 8px;
    border: 2px solid var(--dark);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.app-footer a:hover {
    background: var(--primary);
    transform: translate(-2px, -2px);
    box-shadow: 2px 2px 0px 0px var(--dark);
}

.footer-brand {
    margin-top: 10px;
    font-size: 13px;
    opacity: 0.8;
}

@media (max-width: 600px) {
    .app-header h1 { font-size: 26px; }
    .actions { flex-direction: column; }
    .btn { justify-content: center; width: 100%; }
    .onboarding-card { padding: 24px; }
    .result-overlay { flex-direction: column; align-items: flex-start; gap: 4px; }
}