/* ========================================
   GOOGLE-STYLE DESIGN SYSTEM
   Inspired by about.google
   ======================================== */

/* Google Colors */
:root {
    --google-blue: #4285F4;
    --google-red: #EA4335;
    --google-yellow: #FBBC05;
    --google-green: #34A853;

    /* Text Colors */
    --text-primary: #202124;
    --text-secondary: #5F6368;
    --text-light: #80868B;

    /* Backgrounds */
    --bg-white: #FFFFFF;
    --bg-gray: #F8F9FA;
    --bg-dark: #202124;

    /* Gradients */
    --gradient-blue: linear-gradient(135deg, #4285F4 0%, #669DF6 100%);
    --gradient-red: linear-gradient(135deg, #EA4335 0%, #F28B82 100%);
    --gradient-yellow: linear-gradient(135deg, #FBBC05 0%, #FDD663 100%);
    --gradient-green: linear-gradient(135deg, #34A853 0%, #81C995 100%);
    --gradient-multicolor: linear-gradient(135deg, #4285F4 0%, #EA4335 25%, #FBBC05 50%, #34A853 75%, #4285F4 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.1);
    --shadow-md: 0 1px 3px rgba(60, 64, 67, 0.15), 0 4px 8px rgba(60, 64, 67, 0.1);
    --shadow-lg: 0 8px 20px rgba(60, 64, 67, 0.15);
    --shadow-hover: 0 12px 40px rgba(60, 64, 67, 0.2);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

/* ========================================
   RESET & BASE
   ======================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', 'Google Sans', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-white);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   CONTAINER
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 16px 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
    padding: 12px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 24px;
    transition: var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.hamburger {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(66, 133, 244, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(234, 67, 53, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 60% 80%, rgba(251, 188, 5, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 40% 30%, rgba(52, 168, 83, 0.08) 0%, transparent 40%);
    animation: gradientShift 20s ease-in-out infinite;
}

@keyframes gradientShift {

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

    50% {
        transform: scale(1.1) rotate(5deg);
    }
}

.hero-content {
    text-align: center;
    padding: 0 24px;
    max-width: 900px;
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 48px;
}

.hero-cta {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--google-blue);
    font-weight: 500;
    animation: bounce 2s infinite;
}

.hero-cta i {
    font-size: 1.5rem;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: 100px 0;
}

.section:nth-child(even) {
    background: var(--bg-gray);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: -1px;
    margin-bottom: 16px;
}

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

/* ========================================
   ABOUT SECTION
   ======================================== */
.about-grid {
    display: grid;
    gap: 60px;
}

.about-main {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-text strong {
    color: var(--text-primary);
}

.about-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.info-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.info-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 20px;
}

.card-icon.blue {
    background: var(--gradient-blue);
}

.card-icon.red {
    background: var(--gradient-red);
}

.card-icon.yellow {
    background: var(--gradient-yellow);
    color: var(--text-primary);
}

.card-icon.green {
    background: var(--gradient-green);
}

.info-card h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.info-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   BENTO GRID - PROJECTS
   ======================================== */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.bento-card {
    border-radius: var(--radius-xl);
    padding: 40px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
    transition: var(--transition-slow);
    min-height: 300px;
}

.bento-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

.bento-card.large {
    grid-column: span 2;
    min-height: 380px;
}

.bento-card.blue-gradient {
    background: linear-gradient(135deg, #E8F0FE 0%, #D2E3FC 100%);
}

.bento-card.green-gradient {
    background: linear-gradient(135deg, #E6F4EA 0%, #CEEAD6 100%);
}

.bento-card.red-gradient {
    background: linear-gradient(135deg, #FCE8E6 0%, #F8D7DA 100%);
}

.bento-card.yellow-gradient {
    background: linear-gradient(135deg, #FEF7E0 0%, #FDE293 100%);
}

.bento-content {
    flex: 1;
    z-index: 1;
}

.bento-label {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.bento-title {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.bento-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    max-width: 400px;
}

.bento-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.bento-tech span {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.bento-links {
    display: flex;
    gap: 12px;
}

.bento-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 24px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.bento-link:hover {
    background: var(--bg-white);
    color: var(--google-blue);
    box-shadow: var(--shadow-md);
}

.bento-link.primary {
    background: var(--google-blue);
    color: white;
}

.bento-link.primary:hover {
    background: #3367D6;
    color: white;
}

.bento-visual {
    font-size: 8rem;
    color: rgba(0, 0, 0, 0.06);
    position: absolute;
    right: 40px;
    bottom: 20px;
}

/* ========================================
   SKILLS
   ======================================== */
.skills-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.skill-category h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--bg-gray);
}

.skill-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.skill-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.skill-icon:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.skill-icon img {
    width: 48px;
    height: 48px;
}

.skill-icon span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========================================
   ACHIEVEMENTS
   ======================================== */
.achievements-scroll {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.achievement-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border-top: 4px solid transparent;
}

.achievement-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.achievement-card.yellow {
    border-top-color: var(--google-yellow);
}

.achievement-card.blue {
    border-top-color: var(--google-blue);
}

.achievement-card.green {
    border-top-color: var(--google-green);
}

.achievement-card i {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.achievement-card.yellow i {
    color: var(--google-yellow);
}

.achievement-card.blue i {
    color: var(--google-blue);
}

.achievement-card.green i {
    color: var(--google-green);
}

.achievement-card h3 {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.achievement-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   CONTACT
   ======================================== */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.btn-google {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 24px;
    font-size: 0.95rem;
    font-weight: 500;
    background: var(--bg-gray);
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.btn-google:hover {
    background: #E8EAED;
    box-shadow: var(--shadow-md);
}

.btn-google.blue {
    background: var(--google-blue);
    color: white;
}

.btn-google.blue:hover {
    background: #3367D6;
    box-shadow: var(--shadow-md);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: 40px 24px;
    background: var(--bg-gray);
    border-top: 1px solid #E8EAED;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: 1fr;
    }

    .bento-card.large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-white);
        flex-direction: column;
        padding: 100px 40px;
        gap: 8px;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: block;
        z-index: 1001;
    }

    .section {
        padding: 60px 0;
    }

    .bento-card {
        padding: 28px;
        min-height: 280px;
    }

    .bento-visual {
        font-size: 4rem;
        right: 20px;
        bottom: 10px;
    }

    .hero-title {
        letter-spacing: -1px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .bento-links {
        flex-direction: column;
    }

    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-google {
        width: 100%;
        justify-content: center;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 16px;
    }
}