/* ===================================
   Rizal Hilman - Personal Website
   Swift.org Style Theme
   =================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-bg-alt: #f5f5f7;
    --color-bg-card: #ffffff;

    /* Swift.org Specific Colors */
    --color-bg-hero: linear-gradient(179deg, #fac685 3%, #fbdbb0 59.66%, #ffffff 96.22%);
    --color-button-gradient: linear-gradient(to right bottom, #ff7f00, #f05238);
    --color-text-hero: #051416;

    --color-text-primary: #1d1d1f;
    --color-text-secondary: #86868b;
    --color-text-tertiary: #6e6e73;

    --color-accent: #f05138;
    --color-accent-hover: #d8432c;

    --color-link: #0066cc;
    --color-link-hover: #004499;

    --color-border: #d2d2d7;
    --color-border-light: #e5e5e5;

    /* Typography */
    --font-family: -apple-system, "system-ui", "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --font-code: "Menlo", "Consolas", monospace;

    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 17px;
    --font-size-lg: 19px;
    --font-size-xl: 21px;
    --font-size-2xl: 24px;
    --font-size-3xl: 40px;
    --font-size-4xl: 48px;

    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;

    /* Layout */
    --container-width: 980px;
    --navbar-height: 66px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 12px;
    --radius-pill: 50px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* ... existing element styles ... */
a {
    text-decoration: none;
    color: var(--color-link);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

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

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: center;
}

.nav-container {
    width: 100%;
    max-width: var(--container-width);
    padding: 0 var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* To keep logo left, menu right */
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-primary);
}

.nav-logo:hover {
    text-decoration: none;
    color: var(--color-accent);
}

.nav-logo .logo-text {
    font-size: 24px;
    font-weight: 600;
    color: #000;
}

/* Specific adjustment for Swift.org style menu alignment if needed */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    font-size: var(--font-size-base);
    /* Slightly larger nav */
    color: #333;
    font-weight: 400;
}

.nav-link:hover {
    color: #000;
    text-decoration: none;
}

/* Remove old CTA button from nav if Swift.org doesn't have one prominently or style it differently */
.nav-cta {
    background: transparent;
    color: var(--color-accent) !important;
    padding: 0;
    border-radius: 0;
    font-weight: 400;
}

.nav-cta:hover {
    background: transparent;
    text-decoration: underline;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text-secondary);
    border-radius: 2px;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    padding: 80px 0 100px;
    /* More vertical space */
    background: var(--color-bg-hero);
    /* The Warm Peach Gradient */
    text-align: center;
    /* Swift.org centers hero content usually */
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    /* Text gets slightly more space */
    gap: var(--space-16);
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    /* Left align */
    text-align: left;
    max-width: none;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image {
    width: 100%;
    max-width: 400px;
    /* Much larger image */
    height: auto;
    border-radius: 32px;
    /* Rounded rectangle */
    object-fit: cover;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 8px solid rgba(255, 255, 255, 0.8);
}

/* Specific Response for Mobile */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-8);
    }

    .hero-content {
        align-items: center;
        text-align: center;
        order: 2;
        /* Text below image on mobile is standard, or keep as DOM order */
    }

    .hero-visual {
        order: 1;
        /* Image on top */
        margin-bottom: var(--space-4);
    }

    .hero-image {
        max-width: 280px;
    }

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

.hero-label {
    /* Hide label or style typically */
    display: none;
}

.status-dot {
    width: 6px;
    height: 6px;
    background-color: #34c759;
    border-radius: 50%;
}

.hero-title {
    font-size: 56px;
    /* Larger title */
    line-height: 1.05;
    margin-bottom: 24px;
    color: var(--color-text-hero);
    letter-spacing: -0.015em;
    font-weight: 700;
}

.hero-description {
    font-size: 24px;
    /* Larger intro text */
    line-height: 1.4;
    color: var(--color-text-hero);
    /* Dark text on gradient */
    margin-bottom: 40px;
    max-width: 600px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Swift.org PILL BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 40px;
    /* Big pill */
    font-size: 20px;
    font-weight: 600;
    border-radius: var(--radius-pill);
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--color-button-gradient);
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(240, 82, 56, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(240, 82, 56, 0.4);
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.5);
    /* Glassy white */
    color: var(--color-text-hero);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

/* ===================================
   Sections General
   =================================== */
.section {
    padding: var(--space-16) 0;
    border-top: 1px solid var(--color-border-light);
}

.section-alt {
    background-color: var(--color-bg-alt);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-tag {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: var(--space-2);
}

.section-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-4);
}

/* ===================================
   About Section
   =================================== */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-12);
}

.about-lead {
    font-size: var(--font-size-xl);
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.about-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    line-height: 1.6;
}

.metrics-grid {
    display: grid;
    gap: var(--space-4);
}

.metric-card {
    background: var(--color-bg);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    text-align: center;
}

.metric-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    display: block;
    margin-bottom: var(--space-1);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ===================================
   Credentials Section
   =================================== */
.credentials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.credential-card {
    background: var(--color-bg);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.credential-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.credential-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    color: var(--color-accent);
}

.credential-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
}

.credential-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.credential-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    background: #FFD700;
    color: #333;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-top: var(--space-3);
    font-weight: 600;
}

/* ===================================
   Speeches & Talks Section
   =================================== */
.talks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.talk-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.talk-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--color-border);
}

.talk-visual {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.talk-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.talk-card:hover .talk-image {
    transform: scale(1.05);
}

.talk-content {
    padding: var(--space-5);
}

.talk-location {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    display: block;
    margin-bottom: var(--space-2);
}

.talk-title {
    font-size: var(--font-size-lg);
    line-height: 1.3;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.talk-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    margin-top: auto;
}

.talk-link:hover {
    text-decoration: none;
    color: var(--color-accent-hover);
}

.talk-link .arrow {
    transition: transform var(--transition-fast);
}

.talk-link:hover .arrow {
    transform: translateX(4px);
}

/* ===================================
   Work / Projects Section
   =================================== */
.work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.work-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.work-card:hover {
    border-color: var(--color-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.work-card.large {
    grid-column: span 3;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.work-visual {
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.emoji-icon {
    font-size: 64px;
}

.work-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.work-tag {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: var(--space-2);
}

.work-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

.work-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    line-height: 1.5;
}

.work-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.work-link:hover {
    text-decoration: none;
    color: var(--color-accent-hover);
}

/* ===================================
   Contact / Footer
   =================================== */
.section-contact {
    background-color: var(--color-bg-alt);
    text-align: center;
}

.social-grid {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin: var(--space-8) 0;
    flex-wrap: wrap;
}

.social-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    min-width: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    transition: all var(--transition-fast);
}

.social-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    text-decoration: none;
    color: inherit;
}

.social-icon {
    color: var(--color-text-primary);
}

.social-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.footer {
    background: var(--color-bg);
    padding: var(--space-8) 0;
    border-top: 1px solid var(--color-border-light);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

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

.footer-links {
    display: flex;
    gap: var(--space-4);
}

.footer-links a {
    color: var(--color-text-secondary);
}

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

/* ===================================
   Responsive
   =================================== */
/* ===================================
   Responsive Design
   =================================== */

/* Tablet & Smaller Desktop (max-width: 1024px) */
@media (max-width: 1024px) {
    :root {
        --container-width: 100%;
        --space-16: 48px;
    }

    .container,
    .hero-container,
    .nav-container {
        padding: 0 24px;
    }

    .hero {
        padding: 60px 0 80px;
    }

    .work-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .work-card.large {
        grid-column: span 2;
    }
}

/* Mobile Devices (max-width: 768px) */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 32px;
        --nav-height: 56px;
    }

    /* Navigation */
    .mobile-toggle {
        display: flex;
        z-index: 1001;
        /* Above everything */
    }

    .nav-menu {
        display: none;
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        align-items: stretch;
    }

    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease-out forwards;
    }

    .nav-link {
        font-size: 18px;
        padding: 12px 0;
        text-align: center;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .nav-cta {
        background: var(--color-button-gradient);
        color: white !important;
        margin-top: 8px;
        padding: 12px;
        border-radius: 12px;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

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

    /* Hero */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }

    .hero-content {
        align-items: center;
        text-align: center;
        order: 2;
        /* Text below image */
    }

    .hero-visual {
        order: 1;
        /* Image on top */
    }

    .hero-title {
        font-size: 36px;
        /* Smaller title for mobile */
    }

    .hero-description {
        font-size: 18px;
        max-width: 100%;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

    .btn {
        width: 100%;
    }

    /* Sections */
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .credentials-grid,
    .work-grid,
    .talks-grid {
        grid-template-columns: 1fr;
    }

    .work-card.large {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

    .work-visual {
        min-height: 180px;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: 32px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
}