/* === CSS Variables === */
:root {
    --bg-primary: #FFFFFF;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #FFF5F5;
    --text-primary: #1F1F1F;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-accent: #E85D5D;
    --border-light: #F0F0F0;
    --border-medium: #E5E5E5;
    --btn-primary-bg: #E85D5D;
    --btn-primary-text: #FFFFFF;
    --btn-primary-hover: #D94A4A;
    --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

body {
    font-family: 'LXGW WenKai', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

/* === Subtle Paper Texture === */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    opacity: 0.025;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    z-index: 9999;
}

/* === Gentle Edge Glow (desktop only) === */
@media (min-width: 1024px) {
    body::after {
        content: '';
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 3px;
        background: linear-gradient(to right,
            rgba(232, 93, 93, 0.06) 0%,
            rgba(232, 93, 93, 0.02) 50%,
            rgba(232, 93, 93, 0.06) 100%);
        z-index: 9998;
        pointer-events: none;
    }
}

/* === Typography === */
.font-display { font-family: 'LXGW WenKai', 'STKaiti', 'KaiTi', serif; }
.font-display-en { font-family: 'Outfit', 'DM Sans', 'Playfair Display', sans-serif; }
.font-serif-alt { font-family: 'Cormorant Garamond', Georgia, serif; }

.tracking-tight-custom { letter-spacing: -0.02em; }
.tracking-wide-custom { letter-spacing: 0.06em; }

/* === Animations === */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
}

@keyframes floatReverse {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(-2deg); }
}

@keyframes drift {
    0% { transform: translateX(0) translateY(0); }
    25% { transform: translateX(10px) translateY(-5px); }
    50% { transform: translateX(-5px) translateY(-10px); }
    75% { transform: translateX(-10px) translateY(-3px); }
    100% { transform: translateX(0) translateY(0); }
}

@keyframes petalFall {
    0% { transform: translateY(-10px) rotate(0deg) translateX(0); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.4; }
    100% { transform: translateY(100vh) rotate(360deg) translateX(30px); opacity: 0; }
}

@keyframes drawLine {
    from { stroke-dashoffset: 200; }
    to { stroke-dashoffset: 0; }
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s var(--ease-smooth) forwards;
    opacity: 0;
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
    opacity: 0;
}

.animate-fade-in-scale {
    animation: fadeInScale 0.6s var(--ease-smooth) forwards;
    opacity: 0;
}

.animate-float {
    animation: float 5s ease-in-out infinite;
}

.animate-float-reverse {
    animation: floatReverse 6s ease-in-out infinite;
}

.animate-drift {
    animation: drift 20s ease-in-out infinite;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }
.delay-1000 { animation-delay: 1.0s; }
.delay-1200 { animation-delay: 1.2s; }

/* === Buttons === */
.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    padding: 0.875rem 2.5rem;
    border-radius: 9999px;
    font-family: 'LXGW WenKai', serif;
    font-size: 1rem;
    letter-spacing: 0.04em;
    transition: all 0.35s var(--ease-smooth);
    box-shadow: 0 4px 16px rgba(232, 93, 93, 0.22), inset 0 1px 0 rgba(255,255,255,0.15);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    font-weight: 500;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, transparent 50%);
    pointer-events: none;
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 93, 93, 0.32), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary {
    background: transparent;
    color: var(--text-accent);
    border: 1.5px solid var(--text-accent);
    padding: 0.875rem 2.5rem;
    border-radius: 9999px;
    font-family: 'LXGW WenKai', serif;
    transition: all 0.35s var(--ease-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    position: relative;
    font-weight: 500;
}

.btn-secondary:hover {
    background: #FFF5F5;
    border-color: #FF7A7A;
    transform: translateY(-1px);
}

.btn-ghost {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(8px);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-family: 'LXGW WenKai', serif;
    font-size: 0.875rem;
    transition: all 0.3s var(--ease-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
}

.btn-ghost:hover {
    background: rgba(255,255,255,0.95);
    border-color: var(--border-medium);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

/* === Cards === */
.card {
    background: var(--bg-secondary);
    border-radius: 1.25rem;
    padding: 1.75rem;
    border: 1px solid var(--border-light);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
    transition: transform 0.4s var(--ease-smooth), box-shadow 0.4s var(--ease-smooth);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 1.5rem; right: 1.5rem;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-light), transparent);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.06);
}

.card-pressed {
    background: var(--bg-secondary);
    border-radius: 1.25rem;
    padding: 1.75rem;
    border: 1px solid var(--border-light);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

/* === Inputs === */
.input-elegant {
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-light);
    border-radius: 1rem;
    padding: 1rem 1.25rem;
    font-family: 'LXGW WenKai', 'Noto Sans SC', sans-serif;
    font-size: 1rem;
    color: var(--text-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    width: 100%;
    outline: none;
}

.input-elegant:focus {
    border-color: #E85D5D;
    box-shadow: 0 0 0 4px rgba(232, 93, 93, 0.1), inset 0 1px 2px rgba(0,0,0,0.02);
}

.input-elegant::placeholder {
    color: var(--text-muted);
}

/* === Tags === */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    background: #FFF5F5;
    color: #E85D5D;
    border: 1px solid #FFE0E0;
    font-weight: 500;
}

.tag-outline {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: transparent;
    border: 1px solid currentColor;
}

/* === Decorative Dividers === */
.divider-floral {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--border-medium);
}

.divider-floral::before,
.divider-floral::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-light), transparent);
}

/* === Progress Bar === */
.progress-bar {
    height: 3px;
    background: var(--border-light);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #E85D5D, #FF7A7A);
    border-radius: 999px;
    transition: width 0.5s var(--ease-smooth);
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 20px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.5));
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-medium);
}

/* === Selection === */
::selection {
    background: rgba(232, 93, 93, 0.2);
    color: var(--text-primary);
}

/* === Ornamental Corner === */
.corner-ornament {
    position: absolute;
    width: 36px;
    height: 36px;
    opacity: 0.1;
}

.corner-ornament.top-left {
    top: 12px; left: 12px;
    border-top: 1.5px solid currentColor;
    border-left: 1.5px solid currentColor;
    border-radius: 8px 0 0 0;
}

.corner-ornament.top-right {
    top: 12px; right: 12px;
    border-top: 1.5px solid currentColor;
    border-right: 1.5px solid currentColor;
    border-radius: 0 8px 0 0;
}

.corner-ornament.bottom-left {
    bottom: 12px; left: 12px;
    border-bottom: 1.5px solid currentColor;
    border-left: 1.5px solid currentColor;
    border-radius: 0 0 0 8px;
}

.corner-ornament.bottom-right {
    bottom: 12px; right: 12px;
    border-bottom: 1.5px solid currentColor;
    border-right: 1.5px solid currentColor;
    border-radius: 0 0 8px 0;
}

/* === Stagger children animation === */
.stagger-children > * {
    opacity: 0;
    animation: fadeInUp 0.7s var(--ease-smooth) forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.3s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.4s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.5s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.6s; }
.stagger-children > *:nth-child(7) { animation-delay: 0.7s; }
.stagger-children > *:nth-child(8) { animation-delay: 0.8s; }