/* REA Building Solutions - Premium Custom Styles */
/* Aesthetic: Refined Craftsman - Quality, Trust, Warmth */

/* =============================================
   CSS Custom Properties
   ============================================= */
:root {
    /* Copper/Amber palette */
    --copper-50: #FDF8F3;
    --copper-100: #FAF0E6;
    --copper-200: #F5DCC8;
    --copper-300: #E8C4A0;
    --copper-400: #D4A574;
    --copper-500: #C4884D;
    --copper-600: #B87333;
    --copper-700: #9A5F28;
    --copper-800: #7D4D21;
    --copper-900: #5C3A1A;

    /* Dark tones */
    --slate-850: #1A1F2E;
    --slate-900: #0F1219;
    --slate-950: #080A0F;

    /* Warm neutrals */
    --warm-50: #FAFAF9;
    --warm-100: #F5F5F4;
    --warm-200: #E7E5E4;
    --warm-400: #A8A29E;
    --warm-600: #57534E;
    --warm-800: #292524;
}

/* =============================================
   Base Styles
   ============================================= */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--copper-200);
    color: var(--copper-900);
}

/* =============================================
   Grain Texture Overlay
   ============================================= */
.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* =============================================
   Keyframe Animations
   ============================================= */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

@keyframes scrollLine {
    0% {
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        transform: scaleY(1);
        transform-origin: top;
    }
    50.1% {
        transform: scaleY(1);
        transform-origin: bottom;
    }
    100% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
}

@keyframes kenBurns {
    0% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1.15);
    }
}

/* =============================================
   Reveal Animations
   ============================================= */
.reveal-element {
    opacity: 0;
    transform: translateY(40px);
    animation: fadeUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: var(--delay, 0s);
}

.scroll-line {
    animation: scrollLine 2s ease-in-out infinite;
}

/* =============================================
   Navigation Styles
   ============================================= */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

#navbar.scrolled .nav-link {
    color: var(--warm-800);
}

#navbar.scrolled .nav-link:hover {
    color: var(--copper-600);
}

#navbar.scrolled .nav-link span {
    background-color: var(--copper-600);
}

#navbar.scrolled #mobile-menu-btn {
    color: var(--warm-800);
}

#navbar.scrolled #mobile-menu-btn .hamburger-icon span {
    background-color: var(--warm-800);
}

/* Hamburger Icon */
.hamburger-icon {
    width: 24px;
    height: 18px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger-icon span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: white;
    transition: all 0.3s ease;
    transform-origin: center;
}

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

.hamburger-icon.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

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

/* Mobile Menu */
.mobile-menu-closed {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.mobile-menu-open {
    max-height: 400px;
}

/* =============================================
   Hero Section
   ============================================= */
#hero {
    min-height: 100vh;
    min-height: 100dvh;
}

.hero-bg {
    animation: kenBurns 25s ease-in-out infinite alternate;
}

/* =============================================
   Service Cards
   ============================================= */
.service-card {
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(184, 115, 51, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* =============================================
   Gallery & Filter Styles
   ============================================= */
.filter-btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.filter-btn:hover {
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.3);
}

.filter-btn.active {
    color: white;
    background: var(--copper-600);
    border-color: var(--copper-600);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 18, 25, 0.6) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Gallery item stagger animation */
.gallery-item {
    opacity: 0;
    animation: fadeUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.gallery-item:nth-child(1) { animation-delay: 0.05s; }
.gallery-item:nth-child(2) { animation-delay: 0.1s; }
.gallery-item:nth-child(3) { animation-delay: 0.15s; }
.gallery-item:nth-child(4) { animation-delay: 0.2s; }
.gallery-item:nth-child(5) { animation-delay: 0.25s; }
.gallery-item:nth-child(6) { animation-delay: 0.3s; }
.gallery-item:nth-child(7) { animation-delay: 0.35s; }
.gallery-item:nth-child(8) { animation-delay: 0.4s; }
.gallery-item:nth-child(9) { animation-delay: 0.45s; }
.gallery-item:nth-child(10) { animation-delay: 0.5s; }
.gallery-item:nth-child(11) { animation-delay: 0.55s; }
.gallery-item:nth-child(12) { animation-delay: 0.6s; }

/* =============================================
   Lightbox Styles
   ============================================= */
#lightbox {
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

#lightbox.active {
    opacity: 1;
    visibility: visible;
}

#lightbox-img {
    transform: scale(0.95);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

#lightbox.active #lightbox-img {
    transform: scale(1);
    opacity: 1;
}

/* =============================================
   Form Styles
   ============================================= */
.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 1px solid var(--warm-200);
    background: white;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--copper-400);
    box-shadow: 0 0 0 3px rgba(184, 115, 51, 0.1);
}

.form-input::placeholder {
    color: var(--warm-400);
}

.form-option {
    position: relative;
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--warm-200);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.form-option:hover {
    border-color: var(--copper-300);
    background: var(--copper-50);
}

.project-type-option input:checked + .form-option,
.timeline-option input:checked + .form-option,
.budget-option input:checked + .form-option {
    border-color: var(--copper-600);
    background: var(--copper-50);
}

.project-type-option input:checked + .form-option::before,
.timeline-option input:checked + .form-option::before,
.budget-option input:checked + .form-option::before {
    content: '';
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 1.25rem;
    height: 1.25rem;
    background-color: var(--copper-600);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-size: 0.875rem;
    background-repeat: no-repeat;
    background-position: center;
}

/* Form step transitions */
.form-step {
    animation: fadeUp 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.form-step.hidden {
    display: none;
}

/* File drop zone */
.file-drop-zone {
    border: 2px dashed var(--warm-200);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
    border-color: var(--copper-400);
    background: var(--copper-50);
}

/* File preview thumbnails */
.file-thumbnail {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.file-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-thumbnail .remove-btn {
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    width: 1.25rem;
    height: 1.25rem;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.file-thumbnail:hover .remove-btn {
    opacity: 1;
}

/* =============================================
   Secondary Service Cards
   ============================================= */
.secondary-service {
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.secondary-service:hover {
    transform: translateY(-4px);
}

/* =============================================
   Scroll Reveal
   ============================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* =============================================
   Focus Styles (Accessibility)
   ============================================= */
:focus-visible {
    outline: 2px solid var(--copper-500);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--copper-500);
    outline-offset: 2px;
}

/* =============================================
   Utility Classes
   ============================================= */
.text-balance {
    text-wrap: balance;
}

/* =============================================
   Responsive Adjustments
   ============================================= */
@media (max-width: 768px) {
    .hero-bg {
        animation: none;
        transform: scale(1.1);
    }

    .reveal-element {
        animation-delay: 0s !important;
    }
}

@media (max-width: 640px) {
    .form-option {
        padding: 1rem;
    }

    .gallery-item:nth-child(n) {
        animation-delay: 0s;
    }
}

/* =============================================
   Reduced Motion
   ============================================= */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hero-bg {
        animation: none;
        transform: scale(1.05);
    }

    .reveal-element {
        opacity: 1;
        transform: none;
    }
}

/* =============================================
   FAQ Accordion Styles
   ============================================= */
.faq-item {
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(212, 165, 116, 0.3);
}

.faq-trigger {
    cursor: pointer;
}

.faq-trigger:hover {
    background: rgba(255, 255, 255, 0.02);
}

.faq-icon {
    transition: transform 0.3s ease;
}

.faq-icon.rotate-180 {
    transform: rotate(180deg);
}

.faq-content {
    animation: fadeUp 0.3s ease;
}

/* =============================================
   Sticky Mobile CTA Bar
   ============================================= */
#mobile-cta-bar {
    /* Ensure padding for devices with home indicator */
    padding-bottom: env(safe-area-inset-bottom, 0);
}

@media (min-width: 1024px) {
    #mobile-cta-bar {
        display: none !important;
    }
}

/* Add bottom padding to body when CTA bar is visible on mobile */
@media (max-width: 1023px) {
    body {
        padding-bottom: 60px;
    }
}

/* =============================================
   Print Styles
   ============================================= */
@media print {
    .grain-overlay,
    #navbar,
    #lightbox,
    .filter-btn,
    #load-more-btn,
    #mobile-menu-btn,
    #mobile-cta-bar {
        display: none !important;
    }

    body {
        font-size: 12pt;
        color: black;
        background: white;
    }

    section {
        page-break-inside: avoid;
        padding: 2rem 0;
    }

    a {
        text-decoration: none;
        color: inherit;
    }
}

/* =============================================
   Blog & Guide Styles
   ============================================= */

/* Prose typography for blog posts and guides */
.prose h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.prose h3 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.prose p {
    margin-bottom: 1.25rem;
}

.prose ul, .prose ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.prose li {
    margin-bottom: 0.5rem;
}

.prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

.prose table th {
    background: var(--copper-50);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--warm-800);
    border-bottom: 2px solid var(--copper-200);
}

.prose table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--warm-200);
    font-size: 0.875rem;
}

.prose table tr:hover {
    background: var(--warm-50);
}

.prose blockquote {
    border-left: 3px solid var(--copper-500);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--copper-50);
    font-style: italic;
}

.prose img {
    max-width: 100%;
    height: auto;
    margin: 1.5rem 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.prose a {
    color: var(--copper-600);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.prose a:hover {
    color: var(--copper-700);
    text-decoration: underline;
}

/* Table of Contents (Guide pages) */
.toc-sidebar {
    position: sticky;
    top: 120px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
}

.toc-sidebar::-webkit-scrollbar {
    width: 3px;
}

.toc-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.toc-sidebar::-webkit-scrollbar-thumb {
    background: var(--copper-300);
    border-radius: 10px;
}

/* =============================================
   Service Page Styles
   ============================================= */

/* Process timeline connector */
.process-step {
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 3.5rem;
    left: 50%;
    width: 2px;
    height: calc(100% - 3.5rem);
    background: var(--copper-200);
}

.process-step:last-child::after {
    display: none;
}

@media (min-width: 768px) {
    .process-step::after {
        top: 50%;
        left: calc(100% + 1rem);
        width: calc(2rem);
        height: 2px;
    }
}

/* Cost table highlighting */
.cost-table-highlight {
    background: linear-gradient(to right, var(--copper-50), transparent);
    border-left: 3px solid var(--copper-500);
}

/* =============================================
   Tool Page Styles
   ============================================= */

/* Calculator step indicator */
.tool-step-indicator {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tool-step-dot {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.tool-step-dot.active {
    background: var(--copper-600);
    color: white;
}

.tool-step-dot.completed {
    background: var(--copper-100);
    color: var(--copper-600);
}

.tool-step-dot.pending {
    background: var(--warm-200);
    color: var(--warm-500);
}

/* Tool result cards */
.tool-result-card {
    background: white;
    border: 1px solid var(--warm-200);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.tool-result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--copper-500), var(--copper-600));
}

/* Planning permission result badges */
.result-permitted {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

.result-permission-needed {
    background: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.result-investigate {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: #1e40af;
}

/* =============================================
   Area Page Styles
   ============================================= */

/* Nearby areas links */
.area-link {
    transition: all 0.3s ease;
}

.area-link:hover {
    border-color: var(--copper-300);
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* =============================================
   Lead Capture Styles
   ============================================= */

/* Exit intent modal */
.exit-intent-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 18, 25, 0.8);
    backdrop-filter: blur(4px);
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.exit-intent-overlay.active {
    opacity: 1;
    visibility: visible;
}

.exit-intent-modal {
    background: white;
    max-width: 500px;
    width: 90%;
    position: relative;
    transform: scale(0.95) translateY(20px);
    transition: all 0.3s ease;
}

.exit-intent-overlay.active .exit-intent-modal {
    transform: scale(1) translateY(0);
}

/* Scroll-triggered CTA */
.scroll-cta-sidebar {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%) translateX(120%);
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 30;
    width: 280px;
}

.scroll-cta-sidebar.active {
    transform: translateY(-50%) translateX(0);
}

.scroll-cta-bottom {
    position: fixed;
    bottom: 60px;
    left: 0;
    right: 0;
    transform: translateY(100%);
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 35;
}

.scroll-cta-bottom.active {
    transform: translateY(0);
}

/* Content upgrade inline form */
.content-upgrade-slot {
    background: var(--copper-50);
    border: 1px solid var(--copper-200);
    border-radius: 0;
    padding: 1.5rem 2rem;
    margin: 2rem 0;
}

/* =============================================
   Nav Dropdown Styles
   ============================================= */

/* Ensure dropdown menus appear above other content */
.group:hover > .absolute {
    z-index: 51;
}

/* Dropdown arrow/indicator */
.nav-dropdown-arrow {
    transition: transform 0.2s ease;
}

.group:hover .nav-dropdown-arrow {
    transform: rotate(180deg);
}

/* =============================================
   Skip Navigation (Accessibility)
   ============================================= */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only:focus,
.focus\:not-sr-only:focus {
    position: absolute;
    width: auto;
    height: auto;
    padding: 0.75rem 1.5rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* =============================================
   Inline Form Step Navigation
   ============================================= */
.inline-form-step {
    animation: fadeUp 0.4s ease;
}

.inline-form-step.hidden {
    display: none;
}

.step-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.step-dot {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    border: 2px solid var(--warm-200);
    color: var(--warm-400);
    transition: all 0.3s ease;
}

.step-dot.active {
    border-color: var(--copper-600);
    background: var(--copper-600);
    color: white;
}

.step-dot.completed {
    border-color: var(--copper-600);
    background: var(--copper-100);
    color: var(--copper-600);
}

.step-connector {
    flex: 1;
    height: 2px;
    background: var(--warm-200);
    transition: background 0.3s ease;
}

.step-connector.completed {
    background: var(--copper-600);
}