/* ============================================
   المعمار الذكي - تصميم أسطوري
   تطوير: عامر درزي العنزي
   ============================================ */

:root {
    /* الألوان الأساسية */
    --primary: #00d4ff;
    --primary-dark: #00a8cc;
    --secondary: #7c3aed;
    --accent: #f59e0b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* خلفيات */
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.08);

    /* النصوص */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #64748b;

    /* الحدود */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 212, 255, 0.3);

    /* الخطوط */
    --font-main: 'Tajawal', sans-serif;
    --font-english: 'Outfit', sans-serif;

    /* الظلال */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);

    /* الانتقالات */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============ نافذة الترحيب ============ */
.welcome-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.welcome-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.welcome-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
}

.welcome-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 3rem;
    animation: welcomePopup 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes welcomePopup {
    0% {
        opacity: 0;
        transform: scale(0.5) translateY(50px);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.welcome-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.4);
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

.welcome-content h2 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-tagline {
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.welcome-divider {
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    margin: 0 auto 1.5rem;
    border-radius: 3px;
}

.welcome-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.welcome-btn {
    padding: 1rem 3rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.welcome-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 50px rgba(0, 212, 255, 0.5);
}

.welcome-btn i {
    transition: transform 0.3s ease;
}

.welcome-btn:hover i {
    transform: translateX(-5px);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* الخلفية المتحركة الأسطورية */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
    opacity: 0.3;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(50px, -50px) scale(1.1);
    }

    50% {
        transform: translate(-30px, 30px) scale(0.9);
    }

    75% {
        transform: translate(-50px, -30px) scale(1.05);
    }
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* شريط التنقل */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.logo-text .brand {
    display: block;
    font-size: 1.3rem;
    font-weight: 900;
    background: linear-gradient(to left, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text .tagline {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-english);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.6rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-fast);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.developer-tag {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(124, 58, 237, 0.2);
    border: 1px solid rgba(124, 58, 237, 0.3);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4);
    }

    50% {
        box-shadow: 0 0 0 15px rgba(124, 58, 237, 0);
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% auto;
    animation: gradient-shift 5s ease infinite;
}

@keyframes gradient-shift {

    0%,
    100% {
        background-position: 0% center;
    }

    50% {
        background-position: 100% center;
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    font-family: var(--font-english);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: var(--bg-card);
}

.pulse-glow {
    animation: btn-pulse 2s infinite;
}

@keyframes btn-pulse {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(0, 212, 255, 0.6);
    }
}

/* Floating Cards in Hero */
.hero-visual {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    animation: float-card 6s ease-in-out infinite;
}

.floating-card i {
    font-size: 1.5rem;
    color: var(--primary);
}

.card-1 {
    top: 20%;
    left: 5%;
    animation-delay: 0s;
}

.card-2 {
    top: 30%;
    right: 5%;
    animation-delay: -2s;
}

.card-3 {
    bottom: 25%;
    left: 10%;
    animation-delay: -4s;
}

@keyframes float-card {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* Sections */
.section {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Glass Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transition: var(--transition-normal);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-glow);
}

/* Calculator Section */
.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group label i {
    color: var(--primary);
}

select,
input[type="number"] {
    width: 100%;
    padding: 1rem 1.2rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

select:focus,
input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

option {
    background: var(--bg-secondary);
}

.extra-options {
    margin: 2rem 0;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.extra-options h4 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

@media (max-width: 600px) {
    .checkbox-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.checkbox-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

.checkbox-item input {
    accent-color: var(--primary);
    width: 18px;
    height: 18px;
}

.btn-calculate {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.btn-calculate:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        left: -100%;
    }

    50%,
    100% {
        left: 100%;
    }
}

/* Results Panel */
.results-placeholder {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.results-content.hidden {
    display: none;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ai-badge {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.cost-breakdown {
    margin-bottom: 2rem;
}

.total-cost {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

.total-cost .label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.total-cost h2 {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary);
    font-family: var(--font-english);
    margin: 0.5rem 0;
}

.total-cost .currency {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.cost-details {
    display: grid;
    gap: 0.75rem;
}

.cost-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.info-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.info-card i {
    font-size: 1.5rem;
    color: var(--accent);
}

.info-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.info-value {
    font-weight: 700;
    color: var(--text-primary);
}

/* Materials Section */
.materials-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.mat-tab {
    padding: 0.8rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mat-tab:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.mat-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.material-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    transition: var(--transition-normal);
}

.material-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.material-card .mat-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(124, 58, 237, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.material-card h4 {
    margin-bottom: 0.5rem;
}

.material-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.material-card .price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.material-card .price-value {
    font-weight: 700;
    color: var(--success);
}

.material-card .unit {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Gallery Section */
.gallery-controls {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.style-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-card);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.style-selector label {
    color: var(--text-secondary);
}

.style-selector select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
}

.gallery-wrapper {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
}

@media (max-width: 900px) {
    .gallery-wrapper {
        grid-template-columns: 1fr;
    }
}

.gallery-nav {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

@media (max-width: 900px) {
    .gallery-nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 1rem;
    }
}

.gallery-nav-btn {
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    white-space: nowrap;
}

.gallery-nav-btn i {
    font-size: 1.2rem;
}

.gallery-nav-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.gallery-nav-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
}

.gallery-main {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
}

.main-image-container {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.main-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.main-image-container:hover img {
    transform: scale(1.05);
}

.image-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem 1.5rem 1rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    font-weight: 700;
}

.thumbnail-row {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
}

.thumbnail-row img {
    width: 100px;
    height: 70px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    opacity: 0.5;
    transition: var(--transition-fast);
    border: 2px solid transparent;
}

.thumbnail-row img:hover {
    opacity: 0.8;
}

.thumbnail-row img.active {
    opacity: 1;
    border-color: var(--primary);
}

/* Timeline / Stages */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    right: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 3px;
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-secondary);
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--primary);
    z-index: 1;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.duration-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Tips Section */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tip-card {
    padding: 1.5rem;
}

.tip-card:hover {
    transform: translateY(-5px);
}

.tip-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.tip-icon.warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.tip-icon.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.tip-icon.info {
    background: rgba(0, 212, 255, 0.2);
    color: var(--primary);
}

.tip-card h4 {
    margin-bottom: 0.5rem;
}

.tip-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer */
.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.footer-brand .logo {
    margin-bottom: 0.5rem;
}

.footer-brand .logo span {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom strong {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .floating-card {
        display: none;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }
}

/* ============ نافذة الفيديو ============ */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.video-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.video-content {
    position: relative;
    z-index: 2;
    width: 90%;
    max-width: 900px;
    padding: 0;
    overflow: hidden;
    animation: zoomIn 0.4s ease;
}

@keyframes zoomIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.close-video-btn {
    position: absolute;
    top: 1rem;
    left: 1rem;
    /* RTL */
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-fast);
}

.close-video-btn:hover {
    background: var(--danger);
    transform: rotate(90deg);
}

.video-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.video-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.video-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    /* 16:9 Aspect Ratio */
    background: black;
}

.video-wrapper iframe,
.video-wrapper video,
.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    gap: 1rem;
}

.video-placeholder i {
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.5;
    animation: pulse 2s infinite;
}

/* ============ أزرار التقويم ============ */
.stage-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn-calendar {
    background: rgba(124, 58, 237, 0.15);
    color: var(--secondary);
    border: 1px solid rgba(124, 58, 237, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    font-family: var(--font-main);
}

.btn-calendar:hover {
    background: var(--secondary);
    color: white;
    box-shadow: 0 5px 15px rgba(124, 58, 237, 0.3);
    transform: translateY(-2px);
}

/* ============ تنسيق تقرير الطباعة (PDF) ============ */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-fast);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
}

@media print {
    /* إخفاء العناصر غير الضرورية */
    .navbar,
    .hero,
    .animated-bg,
    .materials-section,
    .gallery-section,
    .stages-section,
    .tips-section,
    .main-footer,
    .welcome-modal,
    .video-modal,
    .calc-form,
    .results-placeholder,
    .extra-options,
    .btn-calculate,
    #downloadReportBtn,
    /* إخفاء زر الطباعة نفسه */
    .btn-calendar

    /* إخفاء أزرار التقويم */
        {
        display: none !important;
    }

    /* تنسيق الحاوية الرئيسية */
    body {
        background: white !important;
        color: black !important;
        overflow: visible !important;
    }

    .section {
        padding: 0 !important;
        margin: 0 !important;
    }

    .calculator-section {
        padding: 2cm !important;
    }

    .calculator-grid {
        display: block !important;
    }

    /* تنسيق النتائج */
    .calc-results {
        display: block !important;
        opacity: 1 !important;
        transform: none !important;
        background: white !important;
        border: 2px solid #333 !important;
        box-shadow: none !important;
        color: black !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .results-content {
        display: block !important;
    }

    /* إضافة ترويسة للتقرير */
    .result-header::before {
        content: "المعمار الذكي - تقرير تقديري";
        display: block;
        font-size: 24pt;
        font-weight: bold;
        text-align: center;
        margin-bottom: 20px;
        color: black;
        border-bottom: 2px solid #000;
        padding-bottom: 10px;
    }

    .result-header h3 {
        display: none !important;
        /* إخفاء العنوان الأصلي */
    }

    .result-header {
        border-bottom: none !important;
    }

    /* تنسيق الأرقام */
    .total-cost {
        background: #f0f0f0 !important;
        border: 1px solid #ccc !important;
        color: black !important;
        page-break-inside: avoid;
    }

    .total-cost h2 {
        color: black !important;
    }

    .cost-item {
        background: white !important;
        border-bottom: 1px solid #ddd !important;
        color: black !important;
        padding: 10px 0 !important;
    }

    .info-cards {
        margin-top: 20px;
        border-top: 2px solid #000;
        padding-top: 20px;
    }

    .info-card {
        background: white !important;
        border: 1px solid #ddd !important;
        color: black !important;
    }

    .info-value,
    .info-label {
        color: black !important;
    }

    /* إضافة تذييل */
    .results-content::after {
        content: "تم التوليد بواسطة منصة المعمار الذكي | حقوق النشر محفوظة © 2026";
        display: block;
        text-align: center;
        margin-top: 50px;
        font-size: 10pt;
        color: #666;
        border-top: 1px solid #ccc;
        padding-top: 10px;
    }
}

/* ============ دليل المقاولين ============ */
.contractors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.contractor-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
}

.contractor-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.contractor-header {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contractor-avatar {
    width: 60px;
    height: 60px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.contractor-info h4 {
    margin-bottom: 0.2rem;
    font-size: 1.1rem;
}

.contractor-info .specialty {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: block;
}

.contractor-body {
    padding: 1.5rem;
}

.rating {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-bottom: 1rem;
    color: #f59e0b;
    /* Gold */
}

.rating span {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-right: 0.5rem;
}

.btn-hire {
    width: 100%;
    padding: 0.8rem;
    background: transparent;
    border: 1px solid var(--success);
    color: var(--success);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    font-family: inherit;
    font-weight: 600;
}

.btn-hire:hover {
    background: var(--success);
    color: white;
}

/* Modal General Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: all 0.3s ease;
}

.modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    z-index: 2;
    width: 90%;
    max-width: 500px;
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-modal-btn {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    transition: 0.3s;
}

.close-modal-btn:hover {
    color: var(--danger);
    transform: rotate(90deg);
}

/* Print Hide */
@media print {

    .contractors-section,
    .modal {
        display: none !important;
    }
}