/* ========================================
   Unicorn Idea Website Styles
   Color Palette from namecard.jpeg
   ======================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --primary-blue: #5DADE2;
    --dark-blue: #1A5276;
    --yellow: #FFB800;
    --red-accent: #E74C3C;
    --white: #FFFFFF;
    --dark-text: #2C3E50;
    --light-bg: #F8FAFC;
    --gray-text: #64748B;

    /* Typography */
    --font-display: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 70px;

    /* Transitions */
    --transition: 0.3s ease;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-text);
    background: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

.zh-text, .title-zh, .lang-block.zh {
    font-family: var(--font-chinese);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ========================================
   Header Navigation
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--primary-blue);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--yellow);
    letter-spacing: 1px;
}

.main-nav {
    display: flex;
    gap: var(--space-lg);
}

.main-nav a {
    color: var(--white);
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
    transition: color var(--transition);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--yellow);
    transition: width var(--transition);
}

.main-nav a:hover::after {
    width: 100%;
}

.contact-btn {
    background: var(--yellow);
    color: var(--dark-text);
    padding: var(--space-xs) var(--space-md);
    border-radius: 4px;
    font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 184, 0, 0.3);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--dark-blue);
    padding: var(--space-lg);
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.mobile-menu a {
    color: var(--white);
    font-size: 1.1rem;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('../assets/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding-top: var(--header-height);
    text-align: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(93, 173, 226, 0.85) 0%, rgba(26, 82, 118, 0.9) 100%);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    color: var(--yellow);
    margin-bottom: var(--space-lg);
    letter-spacing: 4px;
    animation: fadeInUp 0.8s ease;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-tagline {
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    color: var(--white);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-divider {
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--yellow));
    margin: 0 auto var(--space-lg);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-tagline-zh {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: rgba(255, 255, 255, 0.9);
    font-family: var(--font-chinese);
    animation: fadeInUp 0.8s ease 0.6s both;
}

.scroll-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    color: var(--white);
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: var(--space-xl);
    width: 100%;
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-hint svg {
    width: 24px;
    height: 24px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: var(--space-2xl) 0;
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--dark-blue);
    margin-bottom: var(--space-xl);
}

.title-zh {
    display: block;
    font-size: 0.6em;
    color: var(--yellow);
    margin-top: var(--space-xs);
    font-weight: 600;
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--white);
}

.bilingual-block {
    max-width: 900px;
    margin: 0 auto;
    background: var(--light-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.lang-block {
    padding: var(--space-xl);
}

.lang-block.en {
    background: var(--white);
    border-left: 4px solid var(--primary-blue);
}

.lang-block.zh {
    background: var(--light-bg);
    border-left: 4px solid var(--yellow);
}

.lang-block p {
    margin-bottom: var(--space-md);
    font-size: 1rem;
    line-height: 1.8;
}

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

.lang-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: var(--space-md);
    background: var(--primary-blue);
    color: var(--white);
}

.lang-block.zh .lang-badge {
    background: var(--yellow);
    color: var(--dark-text);
}

.lang-divider {
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--yellow));
}

/* ========================================
   Capabilities Section
   ======================================== */
.capabilities {
    background: var(--light-bg);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.capability-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition), box-shadow var(--transition);
}

.capability-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.capability-image {
    height: 200px;
    background: var(--dark-blue);
    overflow: hidden;
}

.capability-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.capability-card:hover .capability-image img {
    opacity: 1;
}

.capability-content {
    padding: var(--space-lg);
}

.capability-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.capability-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
}

.capability-content h3 {
    font-size: 1.2rem;
    color: var(--dark-blue);
    margin-bottom: var(--space-xs);
}

.capability-content h4 {
    font-size: 0.95rem;
    color: var(--yellow);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.capability-content p {
    font-size: 0.9rem;
    color: var(--dark-text);
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

.capability-content .zh-text {
    color: var(--gray-text);
}

/* ========================================
   Why Choose Us Section
   ======================================== */
.why-us {
    background: var(--white);
}

.features-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    background: var(--light-bg);
    padding: var(--space-lg);
    border-radius: 12px;
    transition: transform var(--transition);
}

.feature-item:hover {
    transform: translateX(5px);
}

.feature-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
}

.feature-content {
    flex: 1;
}

.feature-text.en h4 {
    font-size: 1.1rem;
    color: var(--dark-blue);
    margin-bottom: var(--space-xs);
}

.feature-text.en p {
    color: var(--dark-text);
    margin-bottom: var(--space-md);
}

.feature-divider {
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--yellow));
    margin: var(--space-md) 0;
}

.feature-text.zh h4 {
    font-size: 1rem;
    color: var(--yellow);
    margin-bottom: var(--space-xs);
}

.feature-text.zh p {
    color: var(--gray-text);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    background: var(--dark-blue);
    color: var(--white);
}

.contact .section-title {
    color: var(--white);
}

.contact .title-zh {
    color: var(--yellow);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: transform var(--transition), background var(--transition);
    text-decoration: none;
}

.contact-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    transition: transform var(--transition);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1);
}

.contact-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--white);
}

.contact-icon.whatsapp {
    background: #25D366;
}

.contact-icon.whatsapp svg {
    stroke: none;
    fill: var(--white);
    width: 36px;
    height: 36px;
}

.contact-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-value {
    color: var(--yellow);
    font-size: 1.1rem;
    font-weight: 600;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: #0D1B2A;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: var(--space-lg) 0;
    font-size: 0.9rem;
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .main-nav,
    .contact-btn {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
    }

    .feature-icon {
        margin: 0 auto;
    }

    .lang-block {
        padding: var(--space-lg);
    }

    .hero {
        min-height: 80vh;
    }

    .scroll-hint {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .section-title {
        font-size: 1.5rem;
    }

    .capability-content {
        padding: var(--space-md);
    }

    .feature-item {
        padding: var(--space-md);
    }
}

/* ========================================
   Animations (Scroll-triggered via JS)
   ======================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

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

    html {
        scroll-behavior: auto;
    }
}