/* ==========================================
   OPALINE MANAGEMENT GROUP - GLOBAL STYLESHEET
   Shared Design System, Header, Navigation & Footer
   ========================================== */

/* ==========================================
   1. DESIGN SYSTEM & CSS VARIABLES
   ========================================== */
:root {
    /* Brand Palette */
    --color-soft-pearl: #FAF8F5;
    --color-champagne: #E8DDD2;
    --color-pale-sand: #D7C9BE;
    --color-greige: #AEA296;
    --color-charcoal: #2F2F2F;

    /* Utility Color Mappings */
    --bg-primary: var(--color-soft-pearl);
    --bg-secondary: #F3EEE8;
    --bg-dark: var(--color-charcoal);
    --bg-glass: rgba(250, 248, 245, 0.85);
    --bg-glass-dark: rgba(47, 47, 47, 0.95);

    --text-primary: var(--color-charcoal);
    --text-secondary: #5A544E;
    --text-muted: var(--color-greige);
    --text-light: var(--color-soft-pearl);

    --border-light: rgba(215, 201, 190, 0.4);
    --border-medium: var(--color-pale-sand);
    --border-dark: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Transitions & Easing */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out-smooth: cubic-bezier(0.65, 0, 0.35, 1);
    --transition-fast: 0.25s var(--ease-out-expo);
    --transition-normal: 0.45s var(--ease-out-expo);
    --transition-slow: 0.8s var(--ease-out-expo);

    /* Layout */
    --max-width: 1320px;
    --nav-height: 90px;
}

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

html {
    font-size: 16px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

/* Typography Defaults */
h1,
h2,
h3,
h4,
h5,
h6,
.font-serif {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 300;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    border: none;
    background: none;
    outline: none;
}

button {
    cursor: pointer;
}

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

/* ==========================================
   2. UTILITIES & BUTTONS
   ========================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }
}

.eyebrow {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--color-greige);
    display: inline-block;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.section-desc {
    max-width: 640px;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.1rem 2.2rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 999px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-charcoal);
    color: var(--color-soft-pearl);
    border: 1px solid var(--color-charcoal);
}

.btn-primary:hover {
    background-color: #404040;
    border-color: #404040;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(47, 47, 47, 0.15);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-charcoal);
    border: 1px solid var(--color-pale-sand);
}

.btn-secondary:hover {
    background-color: var(--color-champagne);
    border-color: var(--color-pale-sand);
    transform: translateY(-2px);
}

.btn-light {
    background-color: var(--color-soft-pearl);
    color: var(--color-charcoal);
    border: 1px solid var(--color-soft-pearl);
}

.btn-light:hover {
    background-color: var(--color-champagne);
    border-color: var(--color-champagne);
    transform: translateY(-2px);
}

.glass-panel {
    background-color: rgba(250, 248, 245, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-medium);
    box-shadow: 0 20px 45px rgba(47, 47, 47, 0.08);
}

/* ==========================================
   3. SITE HEADER & DESKTOP NAVIGATION
   ========================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 120;
    background-color: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal), height var(--transition-normal);
}

.site-header.scrolled {
    height: 75px;
    background-color: rgba(250, 248, 245, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.brand-logo svg {
    height: 54px;
    width: auto;
    transition: transform var(--transition-fast), height var(--transition-fast);
}

.site-header.scrolled .brand-logo svg {
    height: 46px;
}

.brand-logo:hover svg {
    transform: scale(1.03);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-primary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-charcoal);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* ==========================================
   4. MOBILE NAVIGATION OVERLAY & TOGGLE
   ========================================== */
.mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 6px;
    z-index: 130;
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
    transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-soft-pearl);
    z-index: 105;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 5rem 2rem 3rem 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.mobile-nav-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.mobile-nav-link {
    font-family: var(--font-serif);
    font-size: 2.75rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-nav-link i {
    font-size: 1.75rem;
    color: var(--color-greige);
}

@media (max-width: 992px) {

    .nav-links,
    .desktop-cta {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }
}

/* ==========================================
   5. SITE FOOTER
   ========================================== */
.site-footer {
    background-color: var(--color-charcoal);
    color: var(--color-soft-pearl);
    padding: 6rem 0 3rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 4rem;
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-brand svg {
    display: block;
    margin: 0 auto;
}

.footer-brand p {
    color: var(--color-greige);
    margin-top: 1.25rem;
    max-width: 320px;
    font-size: 0.95rem;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.footer-col-title {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-champagne);
    margin-bottom: 1.5rem;
    text-align: center;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    align-items: center;
    text-align: center;
}

.footer-link {
    color: var(--color-pale-sand);
    font-size: 0.95rem;
    text-align: center;
}

.footer-link:hover {
    color: var(--color-soft-pearl);
}

.footer-bottom {
    padding-top: 2.5rem;
    border-top: 1px solid var(--border-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-greige);
    font-size: 0.85rem;
    gap: 1.25rem;
    text-align: center;
}

.footer-socials {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
}

.footer-socials a {
    color: var(--color-pale-sand);
    font-size: 1.1rem;
}

.footer-socials a:hover {
    color: var(--color-champagne);
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ==========================================
   6. TOAST NOTIFICATIONS
   ========================================== */
.toast-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--color-charcoal);
    color: var(--color-soft-pearl);
    padding: 1rem 1.75rem;
    border-radius: 999px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 300;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    pointer-events: none;
    border: 1px solid var(--color-pale-sand);
}

.toast-notification.show,
.toast-notification.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}