/* ============================================================
   OBSCURA — Fine Dining Design System
   Vanilla CSS · No frameworks · Zero border-radius
   ============================================================ */

/* Variables */
:root {
    /* Typography */
    --font-display: 'Cormorant Garamond', 'Georgia', serif;
    --font-body: 'Inter', 'Helvetica Neue', sans-serif;

    /* Palette — warm neutrals with gold accent */
    --clr-bg: #0a0a0a;
    --clr-bg-elevated: #111111;
    --clr-bg-card: #161616;
    --clr-surface: #1a1a1a;
    --clr-border: #2a2a2a;
    --clr-border-subtle: #1f1f1f;
    --clr-text: #e8e4df;
    --clr-text-muted: #8a8580;
    --clr-text-dim: #5a5550;
    --clr-accent: #c9a96e;
    --clr-accent-hover: #d4b87d;
    --clr-accent-dim: rgba(201, 169, 110, 0.15);
    --clr-error: #c0392b;
    --clr-success: #27ae60;
    --clr-white: #faf8f5;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 10rem;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 200ms var(--ease-out);
    --transition-base: 400ms var(--ease-out);
    --transition-slow: 800ms var(--ease-out);

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 720px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--clr-text);
    background-color: var(--clr-bg);
    overflow-x: hidden;
}

a {
    color: var(--clr-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--clr-accent-hover);
}

img {
    max-width: 100%;
    display: block;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    font-weight: 300;
    line-height: 1.2;
    color: var(--clr-white);
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}
.container--narrow {
    max-width: var(--container-narrow);
}

.text-center { text-align: center; }
.text-accent { color: var(--clr-accent); }
.text-muted { color: var(--clr-text-muted); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Toasts */
.toast {
    position: fixed;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--clr-bg-card);
    border-left: 3px solid var(--clr-accent);
    color: var(--clr-text);
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    opacity: 0;
    transform: translateX(100%);
    animation: toast-in 0.5s var(--ease-out) forwards,
               toast-out 0.5s var(--ease-out) 4s forwards;
}
.toast--success { border-left-color: var(--clr-success); }
.toast--error { border-left-color: var(--clr-error); }
.toast__icon { font-size: 1.1rem; }

@keyframes toast-in {
    to { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
    to { opacity: 0; transform: translateX(100%); }
}

/* Nav */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--space-sm) 0;
    transition: background var(--transition-base), padding var(--transition-base);
}
.nav--scrolled {
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0.6rem 0;
}
.nav__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav__logo {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--clr-white);
}
.nav__links {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}
.nav__links a {
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--clr-text-muted);
    position: relative;
    padding-bottom: 2px;
}
.nav__links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--clr-accent);
    transition: width var(--transition-base);
}
.nav__links a:hover {
    color: var(--clr-white);
}
.nav__links a:hover::after {
    width: 100%;
}

/* Hero */
.hero {
    position: relative;
    height: 100dvh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 10, 0.3) 0%,
        rgba(10, 10, 10, 0.6) 50%,
        rgba(10, 10, 10, 0.95) 100%
    );
    z-index: 1;
}
.hero__bg {
    position: absolute;
    inset: 0;
    background: url('/images/hero.jpg') center/cover no-repeat;
    transform: scale(1.05);
    animation: hero-zoom 20s ease-in-out infinite alternate;
}
@keyframes hero-zoom {
    to { transform: scale(1); }
}
.hero__content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 0 var(--space-md);
}
.hero__eyebrow {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--clr-accent);
    margin-bottom: var(--space-sm);
}
.hero__title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}
.hero__subtitle {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    font-style: italic;
    color: var(--clr-text-muted);
    margin-bottom: var(--space-lg);
}
.hero__cta {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--clr-bg);
    background: var(--clr-accent);
    padding: 1rem 2.5rem;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}
.hero__cta:hover {
    background: var(--clr-accent-hover);
    color: var(--clr-bg);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: var(--space-2xl) 0;
}
.section__eyebrow {
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--clr-accent);
    margin-bottom: var(--space-xs);
}
.section__title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
}
.section__desc {
    max-width: 560px;
    margin: 0 auto var(--space-lg);
    color: var(--clr-text-muted);
    font-size: 0.95rem;
}
.section--alt {
    background: var(--clr-bg-elevated);
}

/* Divider */
.divider {
    width: 60px;
    height: 1px;
    background: var(--clr-accent);
    margin: var(--space-md) auto;
    opacity: 0.5;
}

/* Menu */
.menu-grid {
    display: grid;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}
.menu-course {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--clr-border-subtle);
}
.menu-course:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.menu-course__title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: var(--clr-accent);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
}
.menu-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}
.menu-item__name {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--clr-white);
    margin-bottom: 0.25rem;
}
.menu-item__desc {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
    max-width: 480px;
}

/* Reservation */
.reservation-section {
    background: var(--clr-bg-elevated);
}
.form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    gap: var(--space-sm);
}
.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}
.form__group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.form__label {
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--clr-text-muted);
}
.form__input,
.form__textarea,
.form__select {
    width: 100%;
    padding: 0.85rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--clr-text);
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: 0;
    outline: none;
    transition: border-color var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}
.form__input:focus,
.form__textarea:focus,
.form__select:focus {
    border-color: var(--clr-accent);
}
.form__input::placeholder,
.form__textarea::placeholder {
    color: var(--clr-text-dim);
}
.form__textarea {
    resize: vertical;
    min-height: 100px;
}
.form__submit {
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--clr-bg);
    background: var(--clr-accent);
    padding: 1rem 2rem;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}
.form__submit:hover {
    background: var(--clr-accent-hover);
    transform: translateY(-1px);
}
.form__error {
    font-size: 0.8rem;
    color: var(--clr-error);
}

/* Philosophy */
.philosophy {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}
.philosophy__text {
    padding-right: var(--space-lg);
}
.philosophy__text p {
    color: var(--clr-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}
.philosophy__image {
    width: 100%;
    aspect-ratio: 4 / 5;
    background: var(--clr-surface);
    overflow: hidden;
}
.philosophy__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.philosophy__image:hover img {
    transform: scale(1.03);
}

/* Footer */
.footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--clr-border-subtle);
    text-align: center;
}
.footer__logo {
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--clr-white);
    margin-bottom: var(--space-sm);
}
.footer__info {
    font-size: 0.8rem;
    color: var(--clr-text-dim);
    line-height: 2;
}
.footer__copy {
    margin-top: var(--space-md);
    font-size: 0.7rem;
    color: var(--clr-text-dim);
    letter-spacing: 0.05em;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }

/* Mobile */
@media (max-width: 768px) {
    .nav__links { display: none; }

    .hero__title { letter-spacing: 0.02em; }

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

    .philosophy {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    .philosophy__text {
        padding-right: 0;
        order: 2;
    }
    .philosophy__image {
        order: 1;
        aspect-ratio: 16 / 9;
    }
}