/* ============================================
   GOOGLE-INSPIRED DESIGN SYSTEM
   ============================================ */

:root {
    /* Google Colors */
    --google-blue: #4285F4;
    --google-red: #EA4335;
    --google-yellow: #FBBC05;
    --google-green: #34A853;
    --google-purple: #9B72F3;
    
    /* UI Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e8eaed;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-tertiary: #80868b;
    --border-color: #dadce0;
    --shadow-sm: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
    --shadow-md: 0 1px 3px 0 rgba(60,64,67,0.3), 0 4px 8px 3px rgba(60,64,67,0.15);
    --shadow-lg: 0 4px 6px 0 rgba(60,64,67,0.3), 0 8px 16px 6px rgba(60,64,67,0.15);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Animation */
    --transition-fast: 0.15s cubic-bezier(0.4, 0.0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

body {
    font-family: 'Google Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* ============================================
   BACKGROUND PARTICLES
   ============================================ */

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float-particle 15s infinite ease-in-out;
}

@keyframes float-particle {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

/* ============================================
   FLOATING ICONS
   ============================================ */

.floating-icons {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.float-icon {
    position: absolute;
    font-size: 2rem;
    opacity: 0.15;
    animation: float-around var(--duration, 20s) infinite ease-in-out;
    animation-delay: var(--delay, 0s);
}

.float-icon:nth-child(1) { left: 10%; top: 20%; }
.float-icon:nth-child(2) { right: 15%; top: 30%; }
.float-icon:nth-child(3) { left: 20%; bottom: 25%; }
.float-icon:nth-child(4) { right: 10%; bottom: 20%; }

@keyframes float-around {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(90deg); }
    50% { transform: translate(0, -60px) rotate(180deg); }
    75% { transform: translate(-30px, -30px) rotate(270deg); }
}

/* ============================================
   CONTAINER & MAIN CARD
   ============================================ */

.container {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.main-card {
    width: 100%;
    max-width: 700px;
    background: var(--bg-primary);
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: card-entrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes card-entrance {
    0% { opacity: 0; transform: translateY(50px) scale(0.9); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* ============================================
   HEADER SECTION
   ============================================ */

.header-section {
    background: linear-gradient(135deg, 
        var(--google-blue) 0%, 
        var(--google-purple) 25%, 
        var(--google-red) 50%, 
        var(--google-yellow) 75%, 
        var(--google-green) 100%);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    padding: var(--spacing-2xl) var(--spacing-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: shimmer 3s infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes shimmer {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* Logo Container */
.logo-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.logo-badge {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); }
    50% { transform: scale(1.05); box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2); }
}

/* Main Logo */
.gemini-logo-main {
    margin-bottom: var(--spacing-lg);
}

.gemini-logo-main img {
    height: 40px;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

/* Title */
.main-title {
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.title-gradient {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.title-subtitle {
    display: block;
    font-size: 2rem;
    font-weight: 500;
    opacity: 0.95;
}

.main-description {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
    line-height: 1.6;
    max-width: 550px;
    margin: 0 auto;
}

.highlight-text {
    font-weight: 600;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* Animations */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Progress Preview */
.progress-preview {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.progress-wrapper {
    max-width: 400px;
    margin: 0 auto;
}

.progress-bar {
    position: relative;
    height: 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 100px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, 0.8) 100%);
    border-radius: 100px;
    transition: width 0.6s cubic-bezier(0.65, 0, 0.35, 1);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
    animation: progress-shimmer 1.5s infinite;
}

@keyframes progress-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.3);
    filter: blur(8px);
    opacity: 0.6;
}

.progress-text {
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
}

/* ============================================
   CONTENT SECTION
   ============================================ */

.content-section {
    padding: var(--spacing-xl);
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: sectionFadeIn 0.5s ease-out;
}

@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    font-size: 2rem;
    background: linear-gradient(135deg, var(--google-blue), var(--google-purple));
    border-radius: 20px;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.bounce {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.section-description {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ============================================
   FORM STYLES
   ============================================ */

.form-container {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.label-icon {
    font-size: 1.25rem;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-secondary);
    transition: all var(--transition-base);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--google-blue);
    background: white;
    box-shadow: 0 0 0 4px rgba(66, 133, 244, 0.1);
    transform: translateY(-2px);
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--google-blue), var(--google-purple));
    transition: width var(--transition-base);
}

.form-input:focus ~ .input-line {
    width: 100%;
}

/* Primary Button */
.primary-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--google-blue), var(--google-purple));
    border: none;
    border-radius: 100px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    margin-top: var(--spacing-md);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(66, 133, 244, 0.4);
}

.primary-btn:active {
    transform: translateY(0);
}

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 2;
}

.btn-arrow {
    font-size: 1.5rem;
    transition: transform var(--transition-base);
}

.primary-btn:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
}

.primary-btn.loading .btn-content {
    opacity: 0;
}

.primary-btn.loading .btn-loader {
    display: block;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.btn-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.primary-btn:active .btn-ripple {
    width: 300px;
    height: 300px;
}

/* Error Message */
.error-message {
    color: var(--google-red);
    font-size: 0.875rem;
    text-align: center;
    margin-top: var(--spacing-md);
    font-weight: 500;
}

/* ============================================
   WELCOME BANNER
   ============================================ */

.welcome-banner {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(155, 114, 243, 0.1));
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border: 2px solid var(--google-blue);
    animation: welcome-entrance 0.6s ease-out;
}

@keyframes welcome-entrance {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.welcome-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.name-highlight {
    color: var(--google-blue);
    position: relative;
}

.name-highlight::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--google-blue), var(--google-purple));
    border-radius: 2px;
}

.welcome-description {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ============================================
   PROMPTS GRID
   ============================================ */

.prompts-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.prompt-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.prompt-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--google-blue), var(--google-purple));
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.prompt-card:hover::before {
    transform: scaleY(1);
}

.prompt-card:hover {
    transform: translateX(4px);
    border-color: var(--google-blue);
    box-shadow: var(--shadow-md);
}

.prompt-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.prompt-icon-container {
    position: relative;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(155, 114, 243, 0.1));
    border-radius: 12px;
}

.prompt-emoji {
    font-size: 1.75rem;
    transition: transform var(--transition-base);
}

.prompt-card:hover .prompt-emoji {
    transform: scale(1.2) rotate(10deg);
}

.completed-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 2rem;
    transition: transform var(--transition-base);
}

.prompt-title {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.prompt-arrow {
    width: 24px;
    height: 24px;
    color: var(--text-tertiary);
    transition: all var(--transition-base);
}

.prompt-card:hover .prompt-arrow {
    color: var(--google-blue);
    transform: translateX(4px);
}

/* Completed State */
.prompt-card.completed {
    background: linear-gradient(135deg, rgba(52, 168, 83, 0.05), rgba(52, 168, 83, 0.1));
    border-color: var(--google-green);
    pointer-events: none;
}

.prompt-card.completed .prompt-emoji {
    transform: scale(0);
}

.prompt-card.completed .completed-icon {
    transform: translate(-50%, -50%) scale(1);
    color: var(--google-green);
}

.prompt-card.completed .prompt-title {
    color: var(--google-green);
}

/* Motivational Banner */
.motivational-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(251, 188, 5, 0.1), rgba(234, 67, 53, 0.1));
    border-radius: 12px;
    border: 2px dashed var(--google-yellow);
    font-weight: 600;
    color: var(--text-primary);
    animation: motivational-pulse 2s infinite;
}

.motivation-icon {
    font-size: 1.5rem;
}

@keyframes motivational-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* ============================================
   CERTIFICATE SECTION
   ============================================ */

.celebration-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.confetti-container {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
    pointer-events: none;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--google-blue);
    animation: confetti-fall 3s ease-out forwards;
}

@keyframes confetti-fall {
    to {
        transform: translateY(200px) rotate(360deg);
        opacity: 0;
    }
}

.trophy-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    animation: trophy-bounce 1s ease-in-out infinite;
}

@keyframes trophy-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.celebration-title {
    margin-bottom: var(--spacing-md);
}

.celebration-text {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--google-blue), var(--google-purple), var(--google-red));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.celebration-emoji {
    display: block;
    font-size: 2rem;
}

.celebration-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Certificate Preview */
.certificate-preview {
    margin-bottom: var(--spacing-xl);
}

.preview-badge {
    text-align: center;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--google-blue);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.preview-container {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--google-yellow);
}

.preview-image {
    width: 100%;
    height: auto;
    display: block;
}

.preview-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    to { left: 100%; }
}

/* Certificate Button */
.certificate-btn {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--google-green), #2d8659);
    border: none;
    border-radius: 100px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-md);
}

.certificate-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(52, 168, 83, 0.4);
}

.cert-btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    position: relative;
    z-index: 2;
}

.cert-icon, .cert-sparkle {
    font-size: 1.5rem;
    animation: cert-icon-bounce 1s infinite alternate;
}

@keyframes cert-icon-bounce {
    to { transform: translateY(-4px); }
}

.cert-btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3), transparent);
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.6s;
}

.certificate-btn:hover .cert-btn-glow {
    transform: translate(-50%, -50%) scale(1.5);
}

.development-note {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-style: italic;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: white;
}

.footer-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    opacity: 0.9;
}

.footer-icon {
    font-size: 1.25rem;
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.footer-link {
    color: white;
    text-decoration: none;
    font-size: 0.875rem;
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

.footer-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-divider {
    opacity: 0.5;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.hidden {
    display: none !important;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .main-card {
        border-radius: 20px;
    }
    
    .header-section {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .title-gradient {
        font-size: 1.875rem;
    }
    
    .title-subtitle {
        font-size: 1.5rem;
    }
    
    .main-description {
        font-size: 1rem;
    }
    
    .content-section {
        padding: var(--spacing-lg);
    }
    
    .prompt-card {
        padding: var(--spacing-md);
    }
    
    .prompt-title {
        font-size: 1rem;
    }
    
    .celebration-text {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .logo-badge {
        width: 40px;
        height: 40px;
    }
    
    .logo-img {
        width: 24px;
        height: 24px;
    }
    
    .title-gradient {
        font-size: 1.5rem;
    }
    
    .title-subtitle {
        font-size: 1.25rem;
    }
    
    .footer-text {
        flex-direction: column;
    }
}
.logo-container-creative {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.logo-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-wrapper.gsa-logo {
    animation: float-gentle 3s ease-in-out infinite;
}

.logo-wrapper.gemini-logo {
    animation: float-gentle 3s ease-in-out infinite;
    animation-delay: 1.5s;
}

@keyframes float-gentle {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.logo-badge-large {
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.logo-badge-large::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: logo-shine 3s infinite;
}

@keyframes logo-shine {
    0% { transform: rotate(0deg) translate(-50%, -50%); }
    100% { transform: rotate(360deg) translate(-50%, -50%); }
}

.logo-img-large {
    width: 90px;
    height: auto;
    object-fit: contain;
    position: relative;
    z-index: 2;
}

.logo-badge-small {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    position: absolute;
    bottom: -20px;
    right: -20px;
    border: 3px solid rgba(155, 114, 243, 0.3);
}

.logo-img-small {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(66, 133, 244, 0.3), transparent);
    border-radius: 50%;
    animation: glow-pulse 2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

/* Logo Divider */
.logo-divider {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.divider-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.5), transparent);
}

.divider-icon {
    font-size: 1.5rem;
    animation: rotate-sparkle 4s linear infinite;
}

@keyframes rotate-sparkle {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
}

.gemini-logo-main {
    position: relative;
}

.gemini-logo-main img {
    height: 50px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

/* Google Sign-In Container */
.google-signin-container {
    max-width: 500px;
    margin: 0 auto;
}

.signin-card {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.05), rgba(155, 114, 243, 0.05));
    border: 2px solid var(--google-blue);
    border-radius: 16px;
    padding: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.signin-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    animation: lock-shake 2s ease-in-out infinite;
}

@keyframes lock-shake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

.signin-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.signin-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.g_id_signin {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

/* OR Divider */
.or-divider {
    text-align: center;
    position: relative;
    margin: var(--spacing-xl) 0;
}

.or-divider::before,
.or-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: var(--border-color);
}

.or-divider::before {
    left: 0;
}

.or-divider::after {
    right: 0;
}

.or-divider span {
    background: white;
    padding: 0 var(--spacing-md);
    color: var(--text-tertiary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Logout Container */
.logout-container {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.logout-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.logout-btn:hover {
    background: white;
    border-color: var(--google-red);
    color: var(--google-red);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
    gap: var(--spacing-md);
}

.secondary-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.secondary-btn:hover {
    border-color: var(--google-blue);
    color: var(--google-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Certificate Success State */
.certificate-success {
    text-align: center;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
}

.success-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--google-green);
    margin-bottom: var(--spacing-sm);
}

.success-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.download-btn {
    background: linear-gradient(135deg, var(--google-purple), #6a11cb) !important;
    margin-bottom: var(--spacing-md);
}

.download-btn:hover {
    box-shadow: 0 12px 32px rgba(155, 114, 243, 0.4) !important;
}

.view-certificate-link {
    display: inline-block;
    color: var(--google-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.view-certificate-link:hover {
    background: rgba(66, 133, 244, 0.1);
    text-decoration: underline;
}

/* Mobile Responsiveness for New Elements */
@media (max-width: 768px) {
    .logo-container-creative {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .logo-divider {
        flex-direction: row;
        width: 100%;
        justify-content: center; 
        align-items: center;
    }
    
    .divider-line {
        width: 40px;
        height: 2px;
    }
    
    .logo-badge-large {
        width: 100px;
        height: 100px;
    }
    
    .logo-img-large {
        width: 75px;
    }
    
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .secondary-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo-badge-large {
        width: 90px;
        height: 90px;
    }
    
    .logo-img-large {
        width: 65px;
    }
    
    .logo-badge-small {
        width: 48px;
        height: 48px;
    }
    
    .logo-img-small {
        width: 30px;
        height: 30px;
    }
}

.warning-box {
    background: linear-gradient(135deg, rgba(234, 67, 53, 0.1), rgba(251, 188, 5, 0.1));
    border: 2px solid var(--google-yellow);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-box p {
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
}

/* Step Indicator */
.step-indicator {
    background: linear-gradient(135deg, rgba(52, 168, 83, 0.1), rgba(66, 133, 244, 0.1));
    border: 2px solid var(--google-green);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: fadeInScale 0.5s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.step-icon {
    font-size: 1.5rem;
}

.step-text {
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.step-text strong {
    color: var(--google-blue);
}

/* Form Section Title */
.form-section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Info Box for Returning Users */
.info-box {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(52, 168, 83, 0.1));
    border: 2px solid var(--google-blue);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    animation: fadeInScale 0.5s ease-out;
}

.info-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-box p {
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
}

/* ============================================
   FULLSCREEN LOADER
   ============================================ */

.fullscreen-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(102, 126, 234, 0.95);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease-out;
}

.fullscreen-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

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

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: loader-spin 0.8s linear infinite;
    margin: 0 auto 20px;
}

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

.loader-text {
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    animation: loader-pulse 1.5s ease-in-out infinite;
}

@keyframes loader-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}