/* ============================================
   NexZip - Modern SaaS Landing Page Styles
   Inspired by MacOS + Fluent + Stripe Design
   ============================================ */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary: #2F80FF;
    --primary-dark: #1D6FFF;
    --primary-light: #4DA3FF;
    
    /* Background Colors */
    --bg-light: #EAF6FF;
    --bg-right: #F7F4FF;
    --white: #FFFFFF;
    
    /* Text Colors */
    --text-dark: #0B1320;
    --text-secondary: #1B2430;
    --text-body: #667085;
    --text-muted: #718096;
    --text-light: #A0AEC0;
    
    /* Accent Colors */
    --accent-purple: #BEE3FF;
    --accent-blue: #BEE3FF;
    
    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(47, 128, 255, 0.1);
    --shadow-md: 0 8px 24px rgba(47, 128, 255, 0.15);
    --shadow-lg: 0 16px 40px rgba(47, 128, 255, 0.25);
    --shadow-card: 0 20px 60px rgba(80, 120, 180, 0.18);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2F80FF, #4DA3FF);
    --gradient-bg: linear-gradient(90deg, #EAF6FF 0%, #F7F4FF 100%);
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(80, 120, 180, 0.12);
    
    /* Spacing */
    --header-height: 88px;
    --content-max-width: 1280px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ============================================
   Page Background Decorations
   ============================================ */
.page-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gradient-bg);
}

.bg-blob-left {
    position: absolute;
    width: 500px;
    height: 500px;
    left: -120px;
    top: 60px;
    background: radial-gradient(circle, #BEE3FF 0%, transparent 70%);
    opacity: 0.25;
    filter: blur(20px);
    border-radius: 50%;
}

.bg-blob-right {
    position: absolute;
    width: 600px;
    height: 600px;
    right: -200px;
    top: -100px;
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.3), rgba(47, 128, 255, 0.2));
    border-radius: 80px;
    transform: rotate(-15deg);
}

.bg-curve {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 200px;
    opacity: 0.5;
}

/* ============================================
   Header Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 999;
    padding: 0 60px;
    display: flex;
    align-items: center;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.header-container {
    position: relative;
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-image-placeholder {
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 8px;
    position: relative;
}

.logo-image {
    width: 30px;
    height: 30px;
    object-fit: contain;
    border-radius: 4px;
}

.logo-image-placeholder::after {
    content: 'Logo';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 6px;
    color: rgba(255, 255, 255, 0.5);
    white-space: nowrap;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: -1px;
}

/* Navigation Buttons */
.nav-buttons {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 34px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 999px;
    transition: all 0.25s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
    background: rgba(47, 128, 255, 0.08);
}

/* ============================================
   Banner Section
   ============================================ */
.banner {
    position: relative;
    z-index: 1;
    min-height: 600px;
    padding-top: calc(var(--header-height) + 80px);
    padding-left: 80px;
    padding-right: 80px;
    display: flex;
    align-items: flex-start;
}

.banner-container {
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

/* Left Content */
.banner-content {
    width: 520px;
    animation: fadeUp 0.5s ease;
}

.main-title {
    font-size: 84px;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1;
    letter-spacing: -3px;
    margin-bottom: 32px;
}

.subtitle {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-body);
    line-height: 1.4;
    max-width: 540px;
    margin-bottom: 28px;
}

.description {
    font-size: 18px;
    line-height: 1.9;
    color: var(--text-muted);
    max-width: 520px;
}

.description p {
    margin-bottom: 12px;
}

.description p:last-child {
    margin-bottom: 0;
}

/* Banner Buttons */
.banner-buttons {
    display: flex;
    gap: 28px;
    margin-top: 48px;
    align-items: center;
}

.btn-download {
    width: 240px;
    height: 72px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 26px;
    font-weight: 700;
    border-radius: 999px;
    box-shadow: 0 16px 40px rgba(47, 128, 255, 0.28);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s ease;
}

.btn-download:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 20px 50px rgba(47, 128, 255, 0.35);
}

.btn-icon {
    width: 48px;
    height: 48px;
}

.btn-pricing {
    width: 240px;
    height: 72px;
    background: rgba(255, 255, 255, 0.6);
    color: var(--primary);
    font-size: 28px;
    font-weight: 700;
    border-radius: 999px;
    border: 2px solid var(--primary);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-pricing:hover {
    background: #EEF5FF;
    transform: translateY(-3px);
}

/* ============================================
   Right Product Preview (Mockup Card)
   ============================================ */
.panel-image {
    width: 760px;
    height: auto;
    animation: fadeUp 0.5s ease 0.2s backwards;
}

.mockup-card {
    width: 100%;
    height: 520px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 28px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-card);
    transform: rotate(-1deg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Mockup Header */
.mockup-header {
    height: 72px;
    background: rgba(255, 255, 255, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

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

.mockup-logo-placeholder {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 8px;
    position: relative;
}

.mockup-logo-placeholder::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 4px;
}

.mockup-brand {
    display: flex;
    flex-direction: column;
}

.mockup-brand-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-secondary);
}

.mockup-brand-tagline {
    font-size: 11px;
    color: var(--text-muted);
}

.mockup-user {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mockup-avatar-placeholder {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #E0E5EC, #F0F4F8);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.mockup-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-btn {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.control-btn.minimize {
    background: #A0AEC0;
}

.control-btn.maximize {
    background: #718096;
}

.control-btn.close {
    background: #4A5568;
}

/* Mockup Content */
.mockup-content {
    flex: 1;
    padding: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    width: 100%;
}

.feature-card {
    height: 150px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.7);
    box-shadow: 0 12px 32px rgba(80, 120, 180, 0.15);
}

.feature-icon-placeholder {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(47, 128, 255, 0.1), rgba(77, 163, 255, 0.1));
    border-radius: 14px;
    margin-bottom: 12px;
    position: relative;
}

.feature-icon-placeholder::after {
    content: 'Img';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    color: var(--primary);
    font-weight: 600;
}

.feature-title {
    font-size: 14px;
    font-weight: 700;
    color: #23324A;
    text-align: center;
    margin-bottom: 4px;
}

.feature-desc {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* ============================================
   Function Navigation Area
   ============================================ */
.function-nav {
    background: transparent;
    padding-top: 150px;
    padding-bottom: 80px;
    position: relative;
    z-index: 1;
    overflow: visible;
}

.function-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Section Title */
.function-title-area {
    text-align: center;
    margin-bottom: 64px;
}

.function-main-title {
    font-size: 42px;
    font-weight: 800;
    color: #2B2B2B;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.function-subtitle {
    font-size: 26px;
    font-weight: 500;
    color: #6B7280;
}

/* Function Icon Navigation */
.function-icons {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.function-icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.function-icon-item:hover {
    transform: translateY(-6px);
}

.tool-icon-img {
    width: 96px;
    height: 96px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.tool-icon-item:hover .tool-icon-img {
    transform: translateY(-6px);
}

.tool-icon-placeholder {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(47, 128, 255, 0.1), rgba(77, 163, 255, 0.15));
    border-radius: 20px;
    margin-bottom: 12px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-icon-placeholder::after {
    content: 'Icon';
    font-size: 11px;
    color: var(--primary);
    font-weight: 600;
}

.tool-icon-label {
    font-size: 16px;
    font-weight: 600;
    color: #0B1B35;
}

/* CTA Buttons */
.function-cta {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 68px;
}

.btn-cta-primary {
    width: 220px;
    height: 64px;
    background: var(--gradient-primary);
    color: white;
    font-size: 26px;
    font-weight: 700;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(47, 128, 255, 0.3);
    transition: all 0.3s ease;
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(47, 128, 255, 0.4);
}

.btn-cta-outline {
    width: 220px;
    height: 64px;
    background: transparent;
    color: var(--primary);
    font-size: 26px;
    font-weight: 700;
    border: 2px solid var(--primary);
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-cta-outline:hover {
    background: rgba(47, 128, 255, 0.08);
    transform: translateY(-3px);
}

/* ============================================
   Feature Details Section
   ============================================ */
.feature-details {
    background: #050505;
    padding: 80px 0 200px;
}

.feature-detail-card {
    width: 1200px;
    max-width: 92%;
    margin: 0 auto 64px;
    min-height: 360px;
    border-radius: 36px;
    background: linear-gradient(90deg, #EEF5F8 0%, #DDE3FF 100%);
    box-shadow: 0 20px 60px rgba(40, 60, 120, 0.12);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 60px 70px;
    gap: 60px;
    position: relative;
    overflow: hidden;
    transition: all 0.35s ease;
}

.feature-detail-card:hover {
    transform: translateY(-6px);
}

.feature-detail-card.reverse {
    flex-direction: row-reverse;
}

/* Content Area */
.feature-detail-content {
    width: 460px;
    flex-shrink: 0;
}

.feature-detail-title {
    font-size: 42px;
    font-weight: 800;
    color: #202733;
    line-height: 1.2;
    margin-bottom: 32px;
}

.feature-detail-list {
    list-style: none;
}

.feature-detail-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
}

.feature-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #2F80FF;
    margin-top: 10px;
    flex-shrink: 0;
}

.feature-detail-item span:last-child {
    font-size: 17px;
    line-height: 1.8;
    color: #4B5563;
}

.feature-detail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 180px;
    height: 54px;
    border-radius: 999px;
    background: #2F80FF;
    color: white;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    margin-top: 32px;
    transition: all 0.3s ease;
}

.feature-detail-btn:hover {
    background: #1D6FFF;
    transform: translateY(-2px);
}

/* Visual Area */
.feature-detail-visual {
    width: 520px;
    height: 260px;
    flex-shrink: 0;
}

.feature-preview-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(47, 128, 255, 0.08), rgba(77, 163, 255, 0.12));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-preview-img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    object-fit: cover;
}

.feature-preview-placeholder::after {
    content: 'Product Preview';
    font-size: 16px;
    color: rgba(47, 128, 255, 0.5);
    font-weight: 600;
}

/* ============================================
   Brand CTA Section
   ============================================ */
.brand-cta {
    background: linear-gradient(180deg, #FAFAFA 0%, #F0F4F8 100%);
    padding: 100px 40px;
    position: relative;
}

.brand-cta-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Brand Logo Area */
.brand-logo-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
}

.brand-logo-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-logo-placeholder {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #1677FF, #40A9FF);
    border-radius: 16px;
    position: relative;
}

.brand-logo-placeholder::after {
    content: 'Logo';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
}

.brand-logo-text {
    font-size: 48px;
    font-weight: 700;
    color: #1a1a1a;
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Slogan Area */
.brand-slogan {
    margin-bottom: 48px;
}

.slogan-line {
    font-size: 30px;
    font-weight: 500;
    color: #4B5563;
    line-height: 1.4;
    margin-bottom: 0;
}

.slogan-line:last-child {
    margin-top: 12px;
}

/* Button Group */
.brand-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.brand-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 280px;
    height: 80px;
    background: linear-gradient(135deg, #1677FF, #40A9FF);
    color: white;
    font-size: 28px;
    font-weight: 600;
    border-radius: 40px;
    text-decoration: none;
    box-shadow: 0 12px 40px rgba(22, 119, 255, 0.3);
    transition: all 0.3s ease;
}

.brand-btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(22, 119, 255, 0.4);
}

.brand-btn-icon {
    width: 28px;
    height: 28px;
}

.brand-btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 280px;
    height: 80px;
    background: transparent;
    color: #1677FF;
    font-size: 28px;
    font-weight: 600;
    border: 3px solid #1677FF;
    border-radius: 40px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.brand-btn-outline:hover {
    background: rgba(22, 119, 255, 0.08);
    transform: translateY(-4px);
}

/* ============================================
   Site Footer (Dark)
   ============================================ */
.site-footer {
    background: #1D1D22;
    padding: 40px 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    position: relative;
    z-index: 1;
}

.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
}

.footer-main {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-logo-placeholder {
    width: 44px;
    height: 44px;
    background: linear-gradient(145deg, #1677FF 0%, #40A9FF 40%, #52C41A 70%, #FF4D4F 100%);
    border-radius: 12px;
    position: relative;
    box-shadow: 
        0 4px 12px rgba(22, 119, 255, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.2);
    animation: none;
}

.footer-logo-placeholder::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.8);
    border-radius: 4px 4px 8px 8px;
    border-top: none;
}

.footer-logo-placeholder::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    border: 3px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    border-bottom: none;
}

.footer-brand-name {
    font-size: 34px;
    font-weight: 700;
    color: white;
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    letter-spacing: -0.5px;
}

.footer-nav {
    display: flex;
    gap: 100px;
    margin-left: 80px;
}

.footer-nav-link {
    color: #A0AEC0;
    font-size: 15px;
    font-weight: 400;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.25s ease;
}

.footer-nav-link:hover {
    color: white;
}

.footer-nav a {
    text-decoration: none;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
}

.footer-copyright {
    color: #6B7280;
    font-size: 13px;
    font-weight: 400;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(-1deg);
    }
    50% {
        transform: translateY(-20px) rotate(-1deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.25;
    }
    50% {
        opacity: 0.35;
    }
}

/* Scroll Animation */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.3s ease;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Design - Tablet
   ============================================ */
@media (max-width: 1100px) {
    .header {
        padding: 0 40px;
    }
    
    .banner {
        padding-left: 40px;
        padding-right: 40px;
        padding-top: calc(var(--header-height) + 20px);
    }
    
    .banner-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 60px;
    }
    
    .banner-content {
        width: 100%;
        max-width: 600px;
    }
    
    .main-title {
        font-size: 72px;
    }
    
    .subtitle {
        max-width: 100%;
    }
    
    .description {
        max-width: 100%;
    }
    
    .panel-image {
        width: 90%;
        max-width: 700px;
    }
    
    .mockup-card {
        height: 450px;
        transform: rotate(0deg);
    }
    
    .feature-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }
    
    .feature-card {
        height: 130px;
    }
    
    /* Function Nav */
    .function-nav {
        padding: 40px 30px;
    }
    
    .function-nav-container {
        padding: 0 20px;
    }
    
    .function-main-title {
        font-size: 40px;
    }
    
    .function-icons {
        gap: 32px;
    }
    
    .tool-icon-placeholder {
        width: 60px;
        height: 60px;
    }
    
    .function-cta {
        gap: 24px;
    }
    
    .btn-cta-primary,
    .btn-cta-outline {
        width: 180px;
        height: 56px;
        font-size: 22px;
    }
    
    /* Feature Details */
    .feature-details {
        padding: 60px 0 100px;
    }
    
    .feature-detail-card {
        flex-direction: column;
        padding: 40px 40px;
        text-align: center;
        gap: 40px;
    }
    
    .feature-detail-card.reverse {
        flex-direction: column;
    }
    
    .feature-detail-content {
        width: 100%;
    }
    
    .feature-detail-title {
        font-size: 32px;
    }
    
    .feature-detail-list {
        display: inline-block;
        text-align: left;
    }
    
    .feature-detail-visual {
        width: 100%;
        max-width: 500px;
        height: 200px;
    }
    
    /* Footer */
    .site-footer {
        padding: 30px 40px;
    }

    /* Brand CTA */
    .brand-cta {
        padding: 80px 30px;
    }

    .brand-logo-placeholder {
        width: 56px;
        height: 56px;
        border-radius: 14px;
    }

    .brand-logo-icon {
        width: 56px;
        height: 56px;
    }

    .brand-logo-text {
        font-size: 42px;
    }

    .brand-slogan {
        margin-bottom: 40px;
    }

    .slogan-line {
        font-size: 30px;
    }

    .brand-btn-primary,
    .brand-btn-outline {
        width: 240px;
        height: 70px;
        font-size: 24px;
    }

    .footer-main {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-brand {
        flex-direction: column;
        gap: 12px;
    }

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 24px;
    }
}

/* ============================================
   Responsive Design - Mobile
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: 0 20px;
        height: 72px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .logo-image {
        width: 28px;
        height: 28px;
    }

    .logo-image-big {
        width: 64px;
        height: 64px;
    }
    
    .btn {
        height: 40px;
        padding: 0 24px;
        font-size: 14px;
    }
    
    .banner {
        padding: 100px 20px 60px;
        min-height: auto;
    }
    
    .banner-container {
        gap: 40px;
    }
    
    .banner-content {
        width: 100%;
    }
    
    .main-title {
        font-size: 56px;
        letter-spacing: -2px;
        margin-bottom: 24px;
    }
    
    .subtitle {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .description {
        font-size: 16px;
        line-height: 1.7;
    }
    
    .banner-buttons {
        flex-direction: column;
        gap: 16px;
        margin-top: 32px;
    }
    
    .btn-download,
    .btn-pricing {
        width: 100%;
        max-width: 280px;
        height: 60px;
        font-size: 22px;
    }
    
    .panel-image {
        width: 100%;
    }
    
    .mockup-card {
        height: auto;
        min-height: 400px;
    }
    
    .mockup-header {
        height: 60px;
        padding: 0 16px;
    }
    
    .mockup-brand-name {
        font-size: 14px;
    }
    
    .mockup-brand-tagline {
        font-size: 10px;
    }
    
    .mockup-content {
        padding: 16px;
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .feature-card {
        height: 120px;
        padding: 12px;
    }
    
    .feature-icon-placeholder {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        margin-bottom: 8px;
    }
    
    .feature-title {
        font-size: 12px;
    }
    
    .feature-desc {
        font-size: 10px;
    }
    
    /* Function Nav */
    .function-nav {
        padding: 40px 20px 30px;
    }
    
    .function-nav-container {
        padding: 0;
    }
    
    .function-main-title {
        font-size: 32px;
        letter-spacing: -0.5px;
    }
    
    .function-subtitle {
        font-size: 20px;
    }
    
    .function-title-area {
        margin-bottom: 40px;
    }
    
    .function-icons {
        gap: 24px;
    }
    
    .tool-icon-placeholder {
        width: 56px;
        height: 56px;
        border-radius: 16px;
    }
    
    .tool-icon-label {
        font-size: 13px;
    }
    
    .function-cta {
        flex-direction: column;
        align-items: center;
        gap: 16px;
        margin-top: 32px;
    }
    
    .btn-cta-primary,
    .btn-cta-outline {
        width: 100%;
        max-width: 260px;
        height: 54px;
        font-size: 20px;
    }
    
    /* Feature Details */
    .feature-details {
        padding: 40px 0 80px;
    }
    
    .feature-detail-card {
        padding: 40px 28px;
        margin-bottom: 32px;
        border-radius: 28px;
    }
    
    .feature-detail-title {
        font-size: 26px;
        margin-bottom: 24px;
    }
    
    .feature-detail-item {
        margin-bottom: 14px;
    }
    
    .feature-detail-item span:last-child {
        font-size: 15px;
        line-height: 1.6;
    }
    
    .feature-dot {
        width: 8px;
        height: 8px;
        margin-top: 8px;
    }
    
    .feature-detail-btn {
        width: 160px;
        height: 48px;
        font-size: 16px;
        margin-top: 24px;
    }
    
    .feature-detail-visual {
        width: 100%;
        height: 160px;
    }
    
    .feature-preview-placeholder {
        border-radius: 18px;
    }
    
    /* Footer */
    .site-footer {
        padding: 40px 20px;
    }
    
    .footer-inner {
        text-align: center;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 24px;
    }
    
    .footer-brand {
        flex-direction: column;
    }
    
    .footer-brand-name {
        font-size: 28px;
    }

    .footer-nav {
        flex-direction: column;
        gap: 16px;
    }

    .footer-logo-placeholder {
        width: 36px;
        height: 36px;
    }

    .footer-nav-link {
        font-size: 14px;
    }

    .footer-bottom {
        padding-top: 20px;
    }

    .footer-copyright {
        font-size: 12px;
    }

    /* Brand CTA */
    .brand-cta {
        padding: 60px 20px;
    }

    .brand-logo-area {
        margin-bottom: 24px;
    }

    .brand-logo-placeholder {
        width: 48px;
        height: 48px;
        border-radius: 12px;
    }

    .brand-logo-icon {
        width: 48px;
        height: 48px;
    }

    .brand-logo-text {
        font-size: 36px;
    }

    .brand-slogan {
        margin-bottom: 36px;
    }

    .slogan-line {
        font-size: 24px;
    }

    .brand-buttons {
        flex-direction: column;
        gap: 16px;
    }

    .brand-btn-primary,
    .brand-btn-outline {
        width: 100%;
        max-width: 280px;
        height: 64px;
        font-size: 22px;
    }
}

/* ============================================
   Placeholder Animation
   ============================================ */
.logo-image-placeholder,
.mockup-logo-placeholder,
.mockup-avatar-placeholder,
.feature-icon-placeholder,
.feature-item-icon-placeholder,
.footer-logo-placeholder,
.tool-icon-placeholder,
.feature-preview-placeholder,
.brand-logo-placeholder {
    animation: pulse 3s ease-in-out infinite;
}

.mockup-card {
    animation: float 6s ease-in-out infinite;
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(47, 128, 255, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(47, 128, 255, 0.5);
}