/**
 * Cinematic Ivory — Component Elements Styles
 * 
 * Purpose: Styles standalone reusable elements such as navbar Scroll-effects,
 * responsive slide drawers, video player viewports, and custom input forms.
 */

/* ==================================================
   1. PAGE CURTAIN SCREEN LOADER (.page-loader)
   Purpose: Initial loading curtain. Animates to top.
   ================================================== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--cream);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s var(--ease-expo);
}

.loader-content {
    text-align: center;
}

.loader-logo {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 5rem);
    color: var(--ink);
    opacity: 0;
    transform: translateY(20px);
}

.loader-bar {
    width: 0;
    height: 1px;
    background-color: var(--gold);
    margin-top: 1.5rem;
    transition: width 1.5s var(--ease-smooth);
}


/* ==================================================
   2. FIXED NAVBAR STYLING (.navbar)
   Purpose: Global header bar with scroll triggers.
   Uses mix-blend-mode difference for automatic text color inversion.
   ================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 0.8rem var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 999;
    color: var(--ink); /* Legible onyx/ink text initially on light golden sky */
    background-color: transparent;
    border-bottom: 1px solid rgba(17, 16, 14, 0); /* Transparent border initially */
    transition: padding 0.4s var(--ease-smooth), background-color 0.4s var(--ease-smooth), border-color 0.4s var(--ease-smooth), color 0.4s var(--ease-smooth);
}

/* Glassmorphism scroll backdrop state past hero fold */
.navbar.scrolled {
    padding: 0.5rem var(--container-padding);
    background-color: #000000; /* Solid black backdrop on scroll */
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--sand);
    color: var(--ink); /* Matches active theme ink color */
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: inherit;
    display: flex;
    align-items: center;
}

.nav-logo img {
    max-height: 88px;
    width: auto;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: inherit;
    position: relative;
    padding-bottom: 2px;
}

/* Fine line indicator on hover */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: currentColor;
    transition: width 0.3s var(--ease-smooth);
}

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

/* Mobile burger button toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.5rem;
}


/* ==================================================
   3. MOBILE DRAWER NAVIGATION (.mobile-nav)
   Purpose: Slide down menu panel.
   Uses visibility and pointer-events rules to ensure complete hiding when closed.
   ================================================== */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--cream);
    z-index: 998;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--container-padding);
    transform: translateY(-100%);
    transition: transform 0.8s var(--ease-expo), visibility 0.8s var(--ease-expo);
    visibility: hidden;
    pointer-events: none;
}

.mobile-nav.open {
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
}

.mobile-links {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mobile-link {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 10vw, 5.5rem);
    color: var(--ink);
    transition: transform 0.4s var(--ease-smooth), color 0.4s;
    line-height: 1.1;
}

.mobile-link:hover {
    transform: translateX(20px);
    color: var(--gold);
}

.mobile-meta {
    margin-top: 4rem;
    border-top: 1px solid var(--sand);
    padding-top: 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.mobile-meta div {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--muted);
}

.mobile-meta p a {
    color: var(--ink);
    font-weight: 500;
}

/* Hide mobile overlay drawer completely on desktop viewports */
@media (min-width: 1025px) {
    .mobile-nav {
        display: none !important;
    }
}


/* ==================================================
   4. BUTTON STATE STYLINGS (.btn-editorial)
   Purpose: Custom animated CTA underline transitions.
   ================================================== */
.btn-editorial {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    padding: 0.75rem 0;
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.3s;
}

/* Magnetic bottom line slide-in */
.btn-editorial::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--ink);
    transform: scaleX(0.2);
    transform-origin: left;
    transition: transform 0.5s var(--ease-smooth);
}

.btn-editorial:hover {
    color: var(--burnt-orange);
}

.btn-editorial:hover::after {
    transform: scaleX(1);
    background-color: var(--burnt-orange);
}

.btn-editorial svg {
    transition: transform 0.5s var(--ease-smooth);
}

.btn-editorial:hover svg {
    transform: translateX(8px);
}


/* ==================================================
   5. CINEMATIC MODALS (Video & Project Enquiry Form)
   Purpose: Centered modals with blur overlays, key listeners, backdrop closes.
   ================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(23, 23, 20, 0.96);
    z-index: 1001;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s var(--ease-smooth);
    padding: 2rem;
}

.modal.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-close {
    position: absolute;
    top: 2.5rem;
    right: 2.5rem;
    background: none;
    border: none;
    color: var(--ivory);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: color 0.3s;
}

.modal-close:hover {
    color: var(--burnt-orange);
}

/* Video Wrapper Container (16:9 ratio) */
.modal-container-video {
    width: 100%;
    max-width: 1200px;
    aspect-ratio: 16/9;
    background-color: #000;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

.modal-container-video iframe {
    width: 100%;
    height: 100%;
    display: block;
}

/* Enquiry Form Container */
.modal-container-form {
    width: 100%;
    max-width: 720px;
    background-color: var(--cream);
    padding: clamp(2rem, 5vw, 4.5rem);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    border: 1px solid var(--sand);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-container-form h2 {
    font-size: clamp(2rem, 3.5vw, 3rem);
    color: var(--ink);
    margin-bottom: 0.5rem;
}

.modal-container-form p {
    margin-bottom: 2.5rem;
    font-size: 1rem;
}


/* ==================================================
   6. PREMIUM INPUT FORMS & VALIDATIONS (.enquiry-form)
   Purpose: Inputs validation borders and validation feedback tags.
   ================================================== */
.enquiry-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.form-group-full {
    grid-column: span 2;
}

.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.form-group label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ink);
    margin-bottom: 0.5rem;
}

/* Bottom border only layout */
.form-group input,
.form-group select,
.form-group textarea {
    background: none;
    border: none;
    border-bottom: 1px solid var(--sand);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--ink);
    padding: 0.75rem 0;
    outline: none;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--ink);
}

.form-group select {
    appearance: none;
    cursor: pointer;
}

/* Error validation states */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-bottom-color: var(--burnt-orange);
}

.error-message {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: var(--burnt-orange);
    margin-top: 0.25rem;
    display: none;
}

.form-group.has-error .error-message {
    display: block;
}

.form-submit-row {
    grid-column: span 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
}

/* Status message for client-demo validations */
.form-status {
    grid-column: span 2;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    padding: 1rem;
    border: 1px solid var(--sand);
    display: none;
    margin-top: 1.5rem;
}

.form-status.success {
    background-color: var(--ivory);
    border-color: var(--gold);
    color: var(--muted);
    display: block;
}


/* ==================================================
   7. PREMIUM EDITORIAL FOOTER (.footer)
   Purpose: Full-width base footer with clean grid columns and text-links.
   ================================================== */
.footer {
    background-color: var(--cream);
    border-top: 1px solid var(--sand);
    padding-top: var(--section-gap);
    padding-bottom: 4rem;
    margin-top: 0; /* Placed immediately following sections */
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: clamp(3rem, 6vw, 6rem);
}

.footer-manifesto {
    max-width: 500px;
}

.footer-manifesto h2 {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    color: var(--ink);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.footer-manifesto p {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--muted);
}

.footer-links-col h3 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1.5rem;
}

.footer-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-menu li {
    margin: 0;
    padding: 0;
    list-style-type: none; /* Strip standard bullet points */
}

.footer-menu a {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--muted);
    font-weight: 400;
    transition: color var(--transition-fast);
}

.footer-menu a:hover {
    color: var(--burnt-orange);
}

.footer-bottom {
    border-top: 1px solid var(--sand);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-credits {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--muted);
}

.footer-legal {
    display: flex;
    gap: 2rem;
}

.footer-legal a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--muted);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--ink);
}