/* CSS Variables */
:root {
    --color-primary: #9c7c6c;
    --color-primary-light: #c4a99a;
    --color-primary-dark: #7a5c4c;
    --color-secondary: #e8ddd4;
    --color-accent: #d4a574;
    --color-background: #faf8f5;
    --color-surface: #ffffff;
    --color-text: #3d3d3d;
    --color-text-light: #6b6b6b;
    --color-text-muted: #9a9a9a;
    --color-success: #7cb97c;
    --color-border: #e5e0db;

    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Section Styles */
.section {
    padding: 100px 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    text-align: center;
    margin-bottom: 12px;
    color: var(--color-text);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 60px;
    font-weight: 300;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #e8ddd4 0%, #f5efe9 50%, #faf8f5 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(212, 165, 116, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(156, 124, 108, 0.1) 0%, transparent 50%);
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.save-the-date {
    font-family: var(--font-body);
    font-size: 0.9rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-weight: 500;
}

.couple-names {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: 30px;
    line-height: 1.2;
}

.wedding-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 60px;
}

.date-day {
    font-family: var(--font-display);
    font-size: clamp(4rem, 15vw, 8rem);
    font-weight: 400;
    color: var(--color-primary);
    line-height: 1;
}

.date-month {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 400;
    font-style: italic;
    color: var(--color-primary-light);
    text-transform: lowercase;
}

.date-year {
    font-family: var(--font-body);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 300;
    color: var(--color-text-muted);
    letter-spacing: 8px;
    margin-top: 10px;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-primary-light);
    border-bottom: 2px solid var(--color-primary-light);
    transform: rotate(45deg);
}

/* Details Section */
.details-section {
    background-color: var(--color-surface);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.detail-card {
    background: var(--color-background);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.detail-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.card-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-surface));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--color-primary);
}

.detail-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 10px;
    color: var(--color-text);
}

.detail-main {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.detail-sub {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Agenda Section */
.agenda-section {
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.timeline {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 80px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary-light), var(--color-secondary));
}

.timeline-item {
    display: flex;
    gap: 30px;
    padding: 30px 0;
    position: relative;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideIn 0.6s ease-out forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }

.timeline-item::before {
    content: '';
    position: absolute;
    left: 80px;
    top: 38px;
    width: 12px;
    height: 12px;
    background: var(--color-surface);
    border: 3px solid var(--color-primary);
    border-radius: 50%;
    transform: translateX(-50%);
}

.timeline-time {
    min-width: 60px;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-primary);
    text-align: right;
}

.timeline-content {
    flex: 1;
    padding-left: 30px;
}

.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text);
}

.timeline-content p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.timeline-address {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px !important;
    padding: 6px 14px;
    background: var(--color-secondary);
    border-radius: 20px;
    font-size: 0.85rem !important;
    color: var(--color-primary-dark) !important;
    font-weight: 500;
}

.timeline-address::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%237a5c4c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 10c0 7-9 13-9 13s-9-6-9-13a9 9 0 0 1 18 0z'%3E%3C/path%3E%3Ccircle cx='12' cy='10' r='3'%3E%3C/circle%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
}

.timeline-private {
    opacity: 0.85;
}

.private-note {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--color-secondary), #f5efe9);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem !important;
    color: var(--color-primary-dark) !important;
    margin-bottom: 12px !important;
    font-weight: 500;
}

.private-note svg {
    color: var(--color-accent);
}

/* RSVP Section */
.rsvp-section {
    background: var(--color-surface);
}

.rsvp-deadline {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 40px;
    padding: 20px 30px;
    background: linear-gradient(135deg, var(--color-secondary), #f5efe9);
    border-radius: var(--radius-md);
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
}

.deadline-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.deadline-date {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
}

.rsvp-form {
    max-width: 560px;
    margin: 0 auto;
    background: var(--color-background);
    padding: 50px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Guest Names Dynamic Fields */
.guest-names-container {
    margin-bottom: 28px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(156, 124, 108, 0.05), rgba(212, 165, 116, 0.03));
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.guest-names-container.hidden {
    display: none;
}

.guest-names-container > label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 6px;
}

.guest-names-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.guest-names-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.guest-name-field {
    display: flex;
    align-items: center;
    gap: 12px;
}

.guest-name-field .guest-number {
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-surface);
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 500;
}

.guest-name-field input {
    flex: 1;
    padding: 12px 16px;
    font-size: 1rem;
    font-family: var(--font-body);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    transition: var(--transition);
}

.guest-name-field input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(156, 124, 108, 0.1);
}

.guest-name-field input::placeholder {
    color: var(--color-text-muted);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 10px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    font-family: var(--font-body);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(156, 124, 108, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239a9a9a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 18px;
}

.attendance-group {
    margin-top: 10px;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkbox-card {
    cursor: pointer;
}

.checkbox-card input {
    display: none;
}

.checkbox-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 16px;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-align: center;
}

.checkbox-card input:checked + .checkbox-content {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(156, 124, 108, 0.08), rgba(212, 165, 116, 0.05));
}

.checkbox-card:hover .checkbox-content {
    border-color: var(--color-primary-light);
}

.checkbox-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-secondary);
    border-radius: 50%;
    margin-bottom: 12px;
    color: var(--color-primary);
    transition: var(--transition);
}

.checkbox-card input:checked + .checkbox-content .checkbox-icon {
    background: var(--color-primary);
    color: var(--color-surface);
}

.checkbox-label {
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 4px;
}

.checkbox-time {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-btn {
    width: 100%;
    padding: 18px 32px;
    font-size: 1rem;
    font-weight: 500;
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-surface);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-icon {
    display: flex;
    align-items: center;
}

/* Form Success */
.form-success {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
    padding: 60px 40px;
    background: var(--color-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-success.hidden {
    display: none;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(124, 185, 124, 0.2), rgba(124, 185, 124, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--color-success);
    animation: scaleIn 0.5s ease-out;
}

.form-success h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: 12px;
}

.form-success p {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* Calendar Section */
.calendar-section {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.calendar-title {
    font-weight: 500;
    color: var(--color-text) !important;
    margin-bottom: 16px !important;
}

.calendar-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.calendar-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.calendar-btn.google {
    background: var(--color-surface);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.calendar-btn.google:hover {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(156, 124, 108, 0.05), rgba(212, 165, 116, 0.03));
}

.calendar-btn.apple {
    background: var(--color-primary);
    color: var(--color-surface);
    border: 2px solid var(--color-primary);
}

.calendar-btn.apple:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* Footer */
.footer {
    background: linear-gradient(180deg, var(--color-secondary), var(--color-background));
    padding: 80px 0;
    text-align: center;
}

.footer-hearts {
    color: var(--color-accent);
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

.footer-text {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: 10px;
}

.footer-date {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0);
    }
    to {
        transform: scale(1);
    }
}

/* Scroll Animations */
.section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .section-subtitle {
        margin-bottom: 40px;
    }

    .hero {
        min-height: 100svh;
    }

    .details-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .detail-card {
        padding: 30px 24px;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column;
        gap: 10px;
        padding-left: 50px;
    }

    .timeline-item::before {
        left: 20px;
        top: 5px;
    }

    .timeline-time {
        text-align: left;
        min-width: auto;
    }

    .timeline-content {
        padding-left: 0;
    }

    .rsvp-form {
        padding: 30px 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .checkbox-grid {
        grid-template-columns: 1fr;
    }

    .checkbox-content {
        flex-direction: row;
        justify-content: flex-start;
        gap: 16px;
        padding: 16px 20px;
        text-align: left;
    }

    .checkbox-icon {
        margin-bottom: 0;
        width: 40px;
        height: 40px;
        flex-shrink: 0;
    }

    .checkbox-label {
        margin-bottom: 0;
    }

    .checkbox-time {
        margin-left: auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

    .couple-names {
        font-size: 2rem;
    }

    .date-day {
        font-size: 5rem;
    }

    .rsvp-form {
        padding: 24px 20px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 14px;
    }

    .submit-btn {
        padding: 16px 24px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}