/* ===================================
   Love Letter - A Romantic Website
   Color Palette:
   - Background: #FDF8F3 (warm cream)
   - Text: #3D3229 (warm dark brown)
   - Accent: #9E4B5E (deep rose/wine)
   - Subtle: #D4B8A0 (warm beige)
   =================================== */

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

:root {
    --color-bg: #FDF8F3;
    --color-bg-alt: #F5EDE4;
    --color-text: #3D3229;
    --color-text-light: #6B5D52;
    --color-accent: #9E4B5E;
    --color-accent-light: #B86B7B;
    --color-subtle: #D4B8A0;
    --color-white: #FFFFFF;
    
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Lora', Georgia, serif;
    
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@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;
    }
}

body {
    font-family: var(--font-body);
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Celebration Animation */
.celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
}

.particle {
    position: absolute;
    pointer-events: none;
    opacity: 0;
    animation: particleFall 4s ease-out forwards;
}

.particle.heart {
    color: var(--color-accent);
    font-size: 1rem;
}

.particle.glow {
    width: 6px;
    height: 6px;
    background: var(--color-accent-light);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-accent-light);
}

.particle.dust {
    width: 4px;
    height: 4px;
    background: var(--color-subtle);
    border-radius: 50%;
}

@keyframes particleFall {
    0% {
        opacity: 0;
        transform: translateY(-20px) rotate(0deg) scale(0);
    }
    10% {
        opacity: 0.8;
        transform: translateY(0) rotate(0deg) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(100vh) rotate(360deg) scale(0.5);
    }
}

/* Main Content */
.main-content {
    position: relative;
    z-index: 1;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Sections */
.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 0;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: 0.02em;
}

/* Opening Section */
.opening {
    min-height: 100vh;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.opening .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding-top: 2rem;
    padding-bottom: 4rem;
}

.opening-quote {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-style: italic;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    max-width: 600px;
    opacity: 0;
    transform: translateY(30px);
}

.opening-quote.visible {
    animation: fadeInUp 1.5s var(--transition-slow) forwards;
    animation-delay: 2s;
}

.scroll-hint {
    position: absolute;
    bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-light);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: lowercase;
    opacity: 0;
}

.scroll-hint.visible {
    animation: fadeInUp 1s ease forwards;
    animation-delay: 3.5s;
}

.scroll-hint svg {
    animation: bounce 2s ease-in-out infinite;
    animation-delay: 4s;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(5px); }
}

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

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

.fade-in {
    opacity: 0;
}

.fade-in.visible {
    animation: fadeIn 1s ease forwards;
}

/* Scroll Reveal */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-reveal.delay-1 { transition-delay: 0.1s; }
.scroll-reveal.delay-2 { transition-delay: 0.2s; }
.scroll-reveal.delay-3 { transition-delay: 0.3s; }
.scroll-reveal.delay-4 { transition-delay: 0.4s; }
.scroll-reveal.delay-5 { transition-delay: 0.5s; }

/* Letter Section */
.letter {
    background-color: var(--color-bg-alt);
}

.letter-content {
    max-width: 600px;
    margin: 0 auto;
}

.letter-content p {
    margin-bottom: 1.5rem;
    text-align: justify;
    text-indent: 2rem;
}

.letter-content p:first-child {
    text-indent: 0;
}

.letter-signature {
    text-align: right;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--color-accent);
    margin-top: 2rem;
}

/* Story Section */
.story {
    background-color: var(--color-bg);
}

.story-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .story-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
        justify-items: center;
    }

    .story-text {
        max-width: 720px;
        width: 100%;
    }
}

.story-text p {
    margin-bottom: 1.5rem;
}

.story-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    position: relative;
    width: 100%;
    max-width: 350px;
    aspect-ratio: 4/5;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-subtle);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.image-placeholder:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 40px rgba(61, 50, 41, 0.1);
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--color-text-light);
}

.placeholder-content svg {
    opacity: 0.4;
}

.placeholder-content span {
    font-size: 0.875rem;
    font-style: italic;
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem 1rem;
    background: linear-gradient(transparent, rgba(61, 50, 41, 0.9));
    color: var(--color-white);
    font-size: 0.875rem;
    font-style: italic;
    text-align: center;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity var(--transition-medium), transform var(--transition-medium);
}

.image-placeholder:hover .image-caption,
.image-placeholder.active .image-caption {
    opacity: 1;
    transform: translateY(0);
}

/* Reasons Section */
.reasons {
    background: var(--color-bg-alt);
}

.reasons-list {
    max-width: 550px;
    margin: 0 auto 2rem;
}

.reason {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    border-radius: 4px;
    transition: background-color var(--transition-fast);
}

.reason:hover {
    background-color: rgba(158, 75, 94, 0.05);
}

.reason-heart {
    flex-shrink: 0;
    font-size: 1.25rem;
    color: var(--color-accent);
    cursor: pointer;
    transition: transform var(--transition-fast);
    position: relative;
}

.reason-heart:hover {
    transform: scale(1.2);
}

.reason-heart::after {
    content: attr(data-secret);
    position: absolute;
    left: 2rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-text);
    color: var(--color-white);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: var(--font-body);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: 10;
}

.reason-heart.active::after {
    opacity: 1;
    visibility: visible;
}

.reason p {
    margin: 0;
    color: var(--color-text);
}

.reasons-hint {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Memories / Gallery Section */
.memories {
    background: var(--color-bg);
}

.memories-intro {
    text-align: center;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: 3rem;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 640px) {
    .gallery {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

.gallery-item {
    aspect-ratio: 1;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-subtle);
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(61, 50, 41, 0.1);
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-style: italic;
}

.gallery-hint {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-top: 2rem;
}

/* Promise Section */
.promise {
    background: var(--color-bg-alt);
    text-align: center;
}

.promise-content {
    max-width: 600px;
    margin: 0 auto 3rem;
}

.promise-content p {
    margin-bottom: 1.5rem;
}

.reveal-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: transparent;
    border: 1px solid var(--color-accent);
    border-radius: 4px;
    color: var(--color-accent);
    font-family: var(--font-serif);
    font-size: 1.125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.reveal-button:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

.reveal-button:hover .button-heart {
    animation: heartbeat 0.6s ease infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.button-heart {
    transition: transform var(--transition-fast);
}

/* Final Note */
.final-note {
    max-width: 500px;
    margin: 3rem auto 0;
    padding: 3rem 2rem;
    background: var(--color-white);
    border-radius: 4px;
    box-shadow: 0 20px 60px rgba(61, 50, 41, 0.1);
    position: relative;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    visibility: hidden;
    transition: all var(--transition-slow);
}

.final-note.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    visibility: visible;
}

.final-note-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    line-height: 1.8;
    text-align: center;
    color: var(--color-text);
}

.signature {
    display: block;
    margin-top: 1rem;
    color: var(--color-accent);
    font-style: italic;
}

.floating-hearts {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: -1;
}

.floating-hearts span {
    position: absolute;
    color: var(--color-accent);
    opacity: 0;
    font-size: 1.5rem;
}

.final-note.visible .floating-hearts span {
    animation: floatHeart 3s ease-out forwards;
}

.floating-hearts span:nth-child(1) { animation-delay: 0.1s; left: -60px; top: -40px; }
.floating-hearts span:nth-child(2) { animation-delay: 0.3s; left: 60px; top: -50px; }
.floating-hearts span:nth-child(3) { animation-delay: 0.5s; left: -80px; top: 20px; }
.floating-hearts span:nth-child(4) { animation-delay: 0.7s; left: 70px; top: 30px; }
.floating-hearts span:nth-child(5) { animation-delay: 0.9s; left: 0; top: -60px; }

@keyframes floatHeart {
    0% {
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    30% {
        opacity: 0.6;
        transform: translateY(-10px) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-50px) scale(0.5);
    }
}

/* Footer */
.footer {
    padding: 3rem;
    text-align: center;
    background: var(--color-bg);
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(61, 50, 41, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-medium), visibility var(--transition-medium);
    padding: 1.5rem;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: 4px;
    max-width: 400px;
    text-align: center;
    transform: translateY(20px);
    transition: transform var(--transition-medium);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-text);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.modal-close {
    background: transparent;
    border: 1px solid var(--color-subtle);
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    color: var(--color-text-light);
    font-family: var(--font-body);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Mobile Adjustments */
@media (max-width: 640px) {
    body {
        font-size: 1rem;
    }
    
    .section {
        padding: 3rem 0;
        min-height: auto;
    }
    
    .opening {
        min-height: 100vh;
    }
    
    .letter-content p {
        text-indent: 1.5rem;
        text-align: left;
    }
    
    .reason-heart::after {
        position: fixed;
        left: 50%;
        top: auto;
        bottom: 2rem;
        transform: translateX(-50%);
        white-space: normal;
        max-width: 280px;
        text-align: center;
    }
    
    .final-note {
        padding: 2rem 1.5rem;
    }
}

/* Print Styles */
@media print {
    .celebration,
    .scroll-hint,
    .reveal-button,
    .modal {
        display: none;
    }
    
    .section {
        min-height: auto;
        page-break-inside: avoid;
    }
    
    .scroll-reveal,
    .fade-in {
        opacity: 1 !important;
        transform: none !important;
    }
    
    .final-note {
        opacity: 1;
        visibility: visible;
        transform: none;
    }
}