/* ==========================================
   Musnad Technology Design System (Cyber Blue & Silver Theme)
   ========================================== */

/* Dark Mode Theme (Default) */
:root, [data-theme="dark"] {
    --font-primary: 'Tajawal', 'Readex Pro', sans-serif;
    
    /* Colors */
    --bg-dark: #030712;
    --bg-dark-secondary: #0B1329;
    --bg-card: rgba(11, 19, 41, 0.7);
    --bg-card-hover: rgba(18, 30, 61, 0.85);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-blue: rgba(59, 130, 246, 0.35);
    --border-blue-glow: rgba(59, 130, 246, 0.7);
    
    /* Cyber Blue & Silver Metallic Accents */
    --blue-primary: #3b82f6;
    --blue-light: #60a5fa;
    --blue-dark: #1d4ed8;
    --blue-bright: #e0f2fe;
    
    --cyan: #06b6d4;
    --emerald: #10b981;
    --rose: #f43f5e;
    --purple: #8b5cf6;
    
    /* Text */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    
    /* Gradients */
    --gradient-blue: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 50%, #06b6d4 100%);
    --shadow-blue: 0 0 35px rgba(59, 130, 246, 0.3);
    --shadow-card: 0 15px 35px -10px rgba(0, 0, 0, 0.7);
}

/* Light Mode Theme */
[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-dark-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.88);
    --bg-card-hover: #ffffff;
    
    --border-color: rgba(15, 23, 42, 0.08);
    --border-blue: rgba(29, 78, 216, 0.35);
    --border-blue-glow: rgba(29, 78, 216, 0.7);
    
    --blue-primary: #1d4ed8;
    --blue-light: #2563eb;
    --blue-dark: #1e40af;
    --blue-bright: #0f172a;
    
    --cyan: #0284c7;
    --emerald: #059669;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-dim: #64748b;
    
    --gradient-blue: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #0284c7 100%);
    --shadow-blue: 0 0 25px rgba(37, 99, 235, 0.18);
    --shadow-card: 0 10px 30px -5px rgba(15, 23, 42, 0.08);
}

/* Base Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-primary);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    direction: rtl;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Full-Page Fixed 3D WebGL Background Canvas */
#fullPage3DCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

/* Glowing Custom Cursor */
.custom-cursor {
    position: fixed;
    width: 24px;
    height: 24px;
    border: 2px solid var(--blue-light);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    transition: width 0.2s, height 0.2s;
    mix-blend-mode: difference;
}

/* Background Glow Orbs */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -2;
    pointer-events: none;
    opacity: 0.35;
}

.orb-blue {
    top: -10%;
    right: -10%;
    width: 650px;
    height: 650px;
    background: var(--blue-dark);
}

.orb-cyan {
    bottom: 10%;
    left: -10%;
    width: 550px;
    height: 550px;
    background: #0284c7;
}

.bg-grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px);
    background-size: 36px 36px;
    z-index: -2;
    pointer-events: none;
}

/* Container */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Glass Cards & 3D Tilt */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-blue);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.glass-card:hover {
    border-color: var(--border-blue-glow);
    box-shadow: var(--shadow-blue);
}

.gradient-text-blue {
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header {
    margin-bottom: 56px;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid var(--border-blue);
    border-radius: 9999px;
    color: var(--blue-light);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.35rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
    border-radius: 16px;
}

.btn-primary-blue {
    background: var(--gradient-blue);
    color: #ffffff;
    font-weight: 800;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
}

.btn-primary-blue:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.6);
}

.btn-secondary-blue {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-blue);
    color: var(--blue-light);
}

.btn-secondary-blue:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--blue-light);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.blue-link {
    color: var(--blue-light);
    text-decoration: underline;
}

/* Navbar Controls */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle-btn {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-blue);
    border-radius: 50%;
    color: var(--blue-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
    background: rgba(59, 130, 246, 0.15);
    transform: rotate(15deg);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-blue);
    padding: 12px 0;
}

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

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    object-fit: contain;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-blue);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.25);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.3rem;
    font-weight: 800;
}

.highlight-blue {
    color: var(--blue-light);
}

.logo-subtitle {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-link:hover, .nav-link.active {
    color: var(--blue-light);
}

.btn-nav-cta {
    padding: 8px 18px;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid var(--border-blue);
    border-radius: 9999px;
    color: var(--blue-light);
}

.btn-nav-cta:hover {
    background: var(--blue-primary);
    color: #fff;
}

.mobile-toggle {
    display: none;
    background: none;
    color: var(--text-main);
    font-size: 1.5rem;
}

/* Hero Section & Dedicated 3D Canvas Box */
.hero {
    padding: 180px 0 100px;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid var(--border-blue);
    border-radius: 9999px;
    color: var(--blue-light);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--blue-light);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--blue-light);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.3); }
}

.hero-title {
    font-size: 3.1rem;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--blue-light);
}

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

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-color);
}

/* Dedicated Hero 3D Monogram Canvas Container */
.hero-visual {
    position: relative;
}

.hero-3d-wrapper {
    position: relative;
    width: 100%;
    height: 420px;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(11, 19, 41, 0.7);
    border: 1px solid var(--border-blue-glow);
    box-shadow: var(--shadow-blue);
}

#hero3DCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    background: rgba(11, 19, 41, 0.95);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-blue);
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.6);
    animation: float 4s ease-in-out infinite;
}

.float-1 {
    top: 20px;
    right: 20px;
}

.float-2 {
    bottom: 20px;
    left: 20px;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-icon {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.icon-blue { background: var(--gradient-blue); color: #fff; }
.icon-cyan { background: var(--cyan); color: #fff; }

.floating-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
}

.floating-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* About Section */
.about-section {
    padding: 80px 0;
}

.about-card {
    padding: 48px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.8fr;
    gap: 48px;
    align-items: center;
}

.avatar-ring {
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
    border-radius: 50%;
    padding: 6px;
    background: var(--gradient-blue);
    box-shadow: var(--shadow-blue);
}

.about-avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    background: var(--bg-dark);
}

.about-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.about-title-tag {
    font-size: 0.85rem;
    color: var(--blue-light);
    font-weight: 600;
}

.about-text {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 16px 0 24px;
}

.about-pillars {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pillar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-main);
}

.pillar-item i {
    color: var(--blue-primary);
    font-size: 1.1rem;
}

/* Services Section */
.services {
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

.service-card {
    padding: 36px 28px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: var(--border-blue-glow);
}

.highlighted-card {
    border-color: var(--blue-primary);
    box-shadow: var(--shadow-blue);
}

.card-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background: var(--gradient-blue);
    color: #fff;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 800;
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.icon-blue-bg { background: rgba(59, 130, 246, 0.15); color: var(--blue-light); border: 1px solid var(--border-blue); }
.icon-cyan-bg { background: rgba(6, 182, 212, 0.15); color: var(--cyan); border: 1px solid rgba(6, 182, 212, 0.3); }
.icon-emerald-bg { background: rgba(16, 185, 129, 0.15); color: var(--emerald); border: 1px solid rgba(16, 185, 129, 0.3); }
.icon-indigo-bg { background: rgba(99, 102, 241, 0.15); color: #818cf8; border: 1px solid rgba(99, 102, 241, 0.3); }
.icon-purple-bg { background: rgba(168, 85, 247, 0.15); color: var(--purple); border: 1px solid rgba(168, 85, 247, 0.3); }

.service-title {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.service-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    flex: 1;
}

.service-features li {
    font-size: 0.875rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-features li i {
    color: var(--blue-light);
    font-size: 0.8rem;
}

.pricing-scope-tag {
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-blue);
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-align: center;
    margin-top: auto;
}

.highlight-scope {
    background: rgba(59, 130, 246, 0.12);
    border-color: var(--blue-primary);
    color: var(--blue-light);
}

/* Builder Section */
.calculator-section {
    padding: 80px 0;
}

.calculator-card {
    padding: 48px;
}

.calculator-header {
    margin-bottom: 40px;
}

.calculator-body {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 36px;
    align-items: start;
}

.calc-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.calc-checkbox-label {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.calc-checkbox-label:hover {
    background: rgba(59, 130, 246, 0.05);
    border-color: var(--border-blue);
}

.calc-input {
    display: none;
}

.custom-checkbox {
    width: 22px;
    height: 22px;
    border: 2px solid var(--text-muted);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: transparent;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.calc-input:checked + .custom-checkbox {
    background: var(--blue-primary);
    border-color: var(--blue-primary);
    color: #fff;
}

.calc-option-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.option-title {
    font-weight: 700;
    font-size: 0.98rem;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.tag-accent {
    font-size: 0.7rem;
    padding: 2px 8px;
    background: rgba(59, 130, 246, 0.15);
    color: var(--blue-light);
    border-radius: 4px;
}

.option-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.option-badge {
    font-size: 0.82rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 9999px;
    white-space: nowrap;
}

.once-badge {
    background: rgba(59, 130, 246, 0.15);
    color: var(--blue-light);
    border: 1px solid var(--border-blue);
}

.monthly-badge {
    background: rgba(6, 182, 212, 0.15);
    color: var(--cyan);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.yearly-badge {
    background: rgba(59, 130, 246, 0.15);
    color: var(--blue-light);
    border: 1px solid var(--border-blue);
}

/* Calculator Summary Box */
.summary-box {
    background: var(--bg-dark-secondary);
    border: 1px solid var(--border-blue);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    position: sticky;
    top: 100px;
}

.summary-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.summary-price-breakdown {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0;
    text-align: right;
    background: rgba(0, 0, 0, 0.15);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.price-row strong {
    font-size: 0.95rem;
}

.highlight-row {
    color: var(--blue-light);
}

.highlight-row strong {
    color: var(--blue-light);
}

.summary-time {
    font-size: 0.95rem;
    color: var(--emerald);
    margin-bottom: 20px;
}

.summary-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
}

.calc-note {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 12px;
}

/* AI Demo & Chat Box */
.ai-demo-section {
    padding: 100px 0;
}

.demo-wrapper {
    max-width: 780px;
    margin: 0 auto;
}

.chat-box {
    overflow: hidden;
    border-color: var(--border-blue);
    box-shadow: var(--shadow-blue);
}

.chat-header {
    padding: 20px 24px;
    background: var(--bg-dark-secondary);
    border-bottom: 1px solid var(--border-color);
}

.bot-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.bot-avatar-blue {
    width: 44px;
    height: 44px;
    background: var(--gradient-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}

.bot-name {
    font-size: 1rem;
    font-weight: 700;
}

.bot-status {
    font-size: 0.75rem;
    color: var(--emerald);
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--emerald);
    border-radius: 50%;
}

.chat-messages {
    padding: 24px;
    min-height: 280px;
    max-height: 380px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
}

.message-bot {
    align-self: flex-start;
}

.message-user {
    align-self: flex-end;
}

.msg-content {
    padding: 14px 18px;
    border-radius: 16px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.message-bot .msg-content {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-top-right-radius: 4px;
}

.message-user .msg-content {
    background: var(--blue-primary);
    color: #fff;
    border-top-left-radius: 4px;
}

.msg-time {
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-top: 4px;
}

.chat-suggestions {
    padding: 12px 24px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.suggestion-chip {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    color: var(--text-muted);
    font-size: 0.8rem;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.suggestion-chip:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--blue-light);
    color: var(--blue-light);
}

.chat-input-area {
    padding: 16px 24px;
    background: var(--bg-dark-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.chat-input-area input {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 12px 18px;
    color: var(--text-main);
    font-size: 0.95rem;
    outline: none;
}

.chat-input-area input:focus {
    border-color: var(--blue-primary);
}

.btn-send-blue {
    width: 48px;
    height: 48px;
    background: var(--gradient-blue);
    color: #fff;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
}

.contact-card {
    padding: 56px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 800;
    margin: 16px 0;
}

.contact-info p {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 36px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.info-icon {
    width: 48px;
    height: 48px;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid var(--border-blue);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue-light);
    font-size: 1.2rem;
}

.info-item h5 {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.info-item p {
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-group input, .form-group select, .form-group textarea {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-main);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--blue-primary);
    background: rgba(59, 130, 246, 0.05);
}

.form-group select option {
    background: var(--bg-dark-secondary);
    color: var(--text-main);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Footer */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.footer-links {
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    padding: 14px 20px;
    background: var(--bg-dark-secondary);
    border: 1px solid var(--emerald);
    border-radius: 16px;
    color: var(--text-main);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto 36px;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .calculator-body {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .mobile-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-card);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 32px;
        border-bottom: 1px solid var(--border-blue);
        clip-path: circle(0% at 100% 0);
        transition: clip-path 0.4s ease-in-out;
    }

    .nav-menu.open {
        clip-path: circle(140% at 100% 0);
    }

    .calculator-card, .contact-card, .about-card {
        padding: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}