/* ========================================
   许曦瑶个人简历 - 新版样式
   新颖设计 + 流畅动画 + 现代排版
   ======================================== */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --accent-orange: #f59e0b;
    --accent-pink: #ec4899;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    --radius-sm: 6px;
    --radius: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

@media (max-width: 375px) {
    html { font-size: 14px; }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
    overflow-x: hidden;
}

/* Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 10000;
    width: 0%;
    transition: width 0.1s;
}

/* Container */
.container-new {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

@media (min-width: 768px) {
    .container-new {
        padding: 0 2rem;
    }
}

/* ========================================
   Navigation
   ======================================== */
.nav-new {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.nav-new.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

@media (min-width: 768px) {
    .nav-container {
        padding: 1rem 2rem;
    }
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.nav-logo-text {
    width: 2.25rem;
    height: 2.25rem;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .nav-logo-text {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
}

.nav-name {
    font-weight: 600;
    color: var(--gray-900);
    font-size: 1rem;
}

.nav-links {
    display: none;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
        align-items: center;
        gap: 0.25rem;
    }
}

.nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-download {
    display: none;
}

@media (min-width: 768px) {
    .nav-download {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
        background: var(--gradient-primary);
        color: var(--white);
        font-size: 0.875rem;
        font-weight: 500;
        border-radius: var(--radius);
        transition: var(--transition);
    }
    
    .nav-download:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-glow);
    }
}

/* Nav Toggle */
.nav-toggle {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
}

/* Mobile Nav */
.mobile-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: 1rem;
    border-bottom: 1px solid var(--gray-200);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-link {
    display: block;
    padding: 1rem;
    color: var(--gray-700);
    font-size: 1rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

.mobile-link:hover {
    background: rgba(99, 102, 241, 0.05);
    color: var(--primary);
}

.mobile-download {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
    padding: 1rem;
    background: var(--gradient-primary);
    color: var(--white);
    font-weight: 500;
    border-radius: var(--radius);
}

/* ========================================
   Hero Section
   ======================================== */
.hero-new {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 5rem 0 3rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero-new {
        padding: 6rem 0 4rem;
    }
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-content-new {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
    position: relative;
    z-index: 1;
}

@media (min-width: 992px) {
    .hero-content-new {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 4rem;
    }
}

/* Avatar Section */
.hero-avatar-section {
    position: relative;
    flex-shrink: 0;
}

.avatar-glow {
    position: absolute;
    inset: -20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.3;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.05); }
}

.avatar-main {
    position: relative;
    width: 10rem;
    height: 10rem;
    border-radius: 50%;
    padding: 4px;
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
    .avatar-main {
        width: 13rem;
        height: 13rem;
    }
}

.avatar-img-new {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-status {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-status 2s infinite;
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-text {
    font-size: 0.75rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* Floating Cards */
.float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    background: var(--white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-700);
    animation: float 3s ease-in-out infinite;
}

.float-card i {
    color: var(--primary);
}

.float-card-1 {
    top: 10%;
    right: -20%;
    animation-delay: 0s;
}

.float-card-2 {
    top: 50%;
    left: -25%;
    animation-delay: 1s;
}

.float-card-3 {
    bottom: 10%;
    right: -15%;
    animation-delay: 2s;
}

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

@media (max-width: 991px) {
    .float-card {
        display: none;
    }
}

/* Hero Info */
.hero-info-new {
    flex: 1;
    text-align: center;
}

@media (min-width: 992px) {
    .hero-info-new {
        text-align: left;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-name-new {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: center;
    gap: 0.25rem;
}

@media (min-width: 768px) {
    .hero-name-new {
        font-size: 3.5rem;
        justify-content: flex-start;
    }
}

.name-char {
    display: inline-block;
    animation: name-reveal 0.6s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

.name-char:nth-child(1) { animation-delay: 0.1s; }
.name-char:nth-child(2) { animation-delay: 0.2s; }
.name-char:nth-child(3) { animation-delay: 0.3s; }

@keyframes name-reveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 1.125rem;
    }
}

/* Contact Grid */
.hero-contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
    .hero-contact-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (min-width: 992px) {
    .hero-contact-grid {
        margin-left: 0;
        margin-right: 0;
    }
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 2rem;
    height: 2rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.875rem;
}

.contact-detail {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.contact-value {
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 500;
}

/* Hero Actions */
.hero-actions-new {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    width: 100%;
}

@media (min-width: 992px) {
    .hero-actions-new {
        display: flex;
        flex-wrap: wrap;
        justify-content: flex-start;
        width: auto;
    }
}

.btn-new {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.5rem 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    min-height: 36px;
    white-space: nowrap;
}

@media (min-width: 640px) {
    .btn-new {
        gap: 0.375rem;
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
        min-height: 40px;
    }
}

@media (min-width: 768px) {
    .btn-new {
        gap: 0.5rem;
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
    }
}

.btn-primary-new {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.btn-primary-new:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary-new {
    background: var(--white);
    color: var(--gray-700);
    box-shadow: var(--shadow-sm);
}

.btn-secondary-new:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
}

.btn-accent-new {
    background: var(--gradient-warm);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

.btn-accent-new:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn-icon {
    font-size: 0.875rem;
}

/* Scroll Indicator - 默认隐藏 */
.hero-scroll {
    display: none;
}

/* ========================================
   Section Base
   ======================================== */
.section-new {
    padding: 4rem 0;
}

@media (min-width: 768px) {
    .section-new {
        padding: 5rem 0;
    }
}

.section-header-new {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.section-header-light {
    color: var(--white);
}

.section-header-light .section-title-new {
    color: var(--white);
}

.section-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-200);
    line-height: 1;
}

@media (min-width: 768px) {
    .section-number {
        font-size: 4rem;
    }
}

.section-title-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.section-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-title-new {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .section-title-new {
        font-size: 2.25rem;
    }
}

/* ========================================
   Education Section
   ======================================== */
.section-edu {
    background: var(--white);
}

.edu-timeline {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.edu-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

@media (min-width: 768px) {
    .edu-card {
        flex-direction: row;
        gap: 2rem;
        padding: 2rem;
    }
}

.edu-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.edu-time {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    min-width: 80px;
}

@media (min-width: 768px) {
    .edu-time {
        min-width: 100px;
    }
}

.time-year {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-700);
}

.time-line {
    width: 2px;
    height: 20px;
    background: var(--gradient-primary);
}

.edu-content {
    flex: 1;
}

.edu-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.edu-school h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .edu-school h3 {
        font-size: 1.25rem;
    }
}

.school-tag {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 0.625rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-left: 0.5rem;
}

.edu-degree {
    display: block;
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 500;
    margin-top: 0.25rem;
}

.edu-badge {
    padding: 0.375rem 0.875rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.edu-badge-grad {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.edu-body {
    color: var(--gray-600);
}

.edu-body p {
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
    line-height: 1.6;
}

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

.edu-stats {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.stat-box {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-num {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* ========================================
   Research Section
   ======================================== */
.section-research {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    color: var(--white);
}

.research-featured {
    display: grid;
    gap: 2rem;
}

@media (min-width: 992px) {
    .research-featured {
        grid-template-columns: 200px 1fr;
        gap: 3rem;
    }
}

.research-visual {
    display: none;
}

@media (min-width: 992px) {
    .research-visual {
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }
}

.research-icon-large {
    width: 150px;
    height: 150px;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

.research-decoration {
    position: absolute;
    inset: -20px;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    animation: rotate-slow 20s linear infinite;
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.research-header-new {
    margin-bottom: 1.5rem;
}

.research-period {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
}

.research-title-new {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
    line-height: 1.4;
}

@media (min-width: 768px) {
    .research-title-new {
        font-size: 1.5rem;
    }
}

.research-points {
    display: grid;
    gap: 1rem;
}

@media (min-width: 768px) {
    .research-points {
        grid-template-columns: repeat(3, 1fr);
    }
}

.research-point {
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    transition: var(--transition);
}

.research-point:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.point-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(99, 102, 241, 0.3);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    margin-bottom: 0.75rem;
}

.point-icon-2 {
    background: rgba(139, 92, 246, 0.3);
}

.point-icon-3 {
    background: rgba(6, 182, 212, 0.3);
}

.point-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.point-content p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* ========================================
   Experience Section
   ======================================== */
.section-exp {
    background: var(--gray-50);
}

.exp-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .exp-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.exp-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.exp-card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.exp-company-icon {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-warm);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.exp-icon-2 {
    background: linear-gradient(135deg, #ec4899, #f43f5e);
}

.exp-company-info {
    flex: 1;
}

.exp-company-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.exp-position {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 500;
}

.exp-duration {
    padding: 0.375rem 0.75rem;
    background: var(--gray-100);
    border-radius: var(--radius);
    font-size: 0.75rem;
    color: var(--gray-500);
    white-space: nowrap;
}

.exp-list {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.exp-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

.exp-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

.exp-highlight {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 500;
}

.exp-highlight i {
    color: var(--accent-orange);
}

.exp-highlight-2 i {
    color: var(--accent-pink);
}

/* ========================================
   Skills Section
   ======================================== */
.section-skills {
    background: var(--white);
}

.skills-layout {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 992px) {
    .skills-layout {
        grid-template-columns: 2fr 1fr;
    }
}

.skills-main {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-block {
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.skill-block-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.skill-block-icon {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

.skill-icon-2 {
    background: var(--gradient-warm);
}

.skill-block h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--gray-600);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.skill-desc {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.skills-side {
    display: flex;
    flex-direction: column;
}

.certs-card {
    padding: 1.5rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--white);
}

.certs-card h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.certs-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.certs-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
}

.certs-list li i {
    font-size: 1.25rem;
}

/* ========================================
   Contact Section
   ======================================== */
.section-contact {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 4rem 0 5rem;
}

.contact-card-new {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

@media (min-width: 768px) {
    .contact-card-new {
        flex-direction: row;
        text-align: left;
        padding: 3rem;
        gap: 2.5rem;
    }
}

.contact-avatar-small {
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary);
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .contact-avatar-small {
        width: 6rem;
        height: 6rem;
    }
}

.contact-avatar-small img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-content {
    flex: 1;
}

.contact-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.contact-content p {
    font-size: 1rem;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.contact-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

@media (min-width: 768px) {
    .contact-buttons {
        justify-content: flex-start;
    }
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.contact-btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.contact-btn-secondary:hover {
    background: var(--gray-200);
    box-shadow: var(--shadow);
}

.contact-btn-accent {
    background: var(--gradient-warm);
}

.contact-btn-accent:hover {
    box-shadow: 0 0 40px rgba(245, 158, 11, 0.3);
}

/* ========================================
   Footer
   ======================================== */
.footer-new {
    padding: 2rem 0;
    background: var(--gray-900);
    color: var(--white);
    text-align: center;
}

.footer-new p {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.footer-sub {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* ========================================
   Back to Top
   ======================================== */
.back-to-top-new {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-glow);
}

.back-to-top-new.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top-new:hover {
    transform: translateY(-4px);
}

/* ========================================
   Animations
   ======================================== */
[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Print */
@media print {
    .nav-new, .back-to-top-new, .hero-scroll {
        display: none;
    }
}

/* Touch Device */
@media (pointer: coarse) {
    .float-card {
        animation: none;
    }
}

.contact-item,
.contact-item * {
    color: #0f172a !important;
}

.contact-item i {
    color: #ffffff !important;
}
    display: none;
}

@media (max-width: 991px) {
    .mobile-info-cards {
        display: flex;
        justify-content: center;
        margin-top: 1rem;
    }
    
    .mobile-info-card {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
        background: var(--white);
        border-radius: var(--radius-full);
        box-shadow: var(--shadow);
        font-size: 0.875rem;
        color: var(--gray-700);
    }
    
    .mobile-info-card i {
        color: var(--primary);
    }
}

@media (min-width: 992px) {
    .mobile-info-cards {
        display: none;
    }
}

/* ========================================
   Mobile Optimizations
   ======================================== */

/* Extra Small Devices */
@media (max-width: 374px) {
    html {
        font-size: 13px;
    }
    
    .nav-container {
        padding: 0.5rem 0.75rem;
    }
    
    .nav-logo-text {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.75rem;
    }
    
    .nav-name {
        font-size: 0.875rem;
    }
    
    .hero-new {
        padding: 4.5rem 0 2rem;
        min-height: auto;
    }
    
    .avatar-main {
        width: 7rem;
        height: 7rem;
    }
    
    .hero-name-new {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 0.875rem;
    }
    
    .hero-contact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        padding: 0.625rem;
    }
    
    .contact-icon {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.75rem;
    }
    
    .contact-value {
        font-size: 0.8125rem;
    }
    
    .btn-new {
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
    }
    
    .section-new {
        padding: 2.5rem 0;
    }
    
    .section-header-new {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        margin-bottom: 1.5rem;
    }
    
    .section-number {
        font-size: 2rem;
    }
    
    .section-title-new {
        font-size: 1.375rem;
    }
    
    .edu-card {
        padding: 1rem;
    }
    
    .edu-time {
        flex-direction: row;
        justify-content: center;
        gap: 0.5rem;
        padding: 0.5rem;
    }
    
    .time-line {
        width: 30px;
        height: 2px;
    }
    
    .research-point {
        padding: 1rem;
    }
    
    .exp-card {
        padding: 1rem;
    }
    
    .exp-card-header {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .exp-duration {
        align-self: flex-start;
    }
    
    .skill-block {
        padding: 1rem;
    }
    
    .skill-tag {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }
    
    .contact-card-new {
        padding: 1.25rem;
    }
    
    .contact-buttons {
        flex-direction: column;
    }
    
    .contact-btn {
        justify-content: center;
    }
}

/* Small Devices (375px - 639px) */
@media (min-width: 375px) and (max-width: 639px) {
    .hero-new {
        padding: 5rem 0 2.5rem;
        min-height: auto;
    }
    
    .avatar-main {
        width: 8rem;
        height: 8rem;
    }
    
    .hero-name-new {
        font-size: 2rem;
    }
    
    .hero-contact-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
    }
    
    .hero-actions-new {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-new {
        width: 100%;
        justify-content: center;
    }
    
    .section-header-new {
        margin-bottom: 2rem;
    }
    
    .edu-card {
        padding: 1.25rem;
    }
    
    .edu-time {
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
        padding: 0.625rem;
    }
    
    .time-line {
        width: 40px;
        height: 2px;
    }
    
    .exp-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-buttons {
        flex-direction: column;
    }
}

/* Medium Devices (640px - 767px) */
@media (min-width: 640px) and (max-width: 767px) {
    .hero-contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .exp-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-layout {
        grid-template-columns: 1fr;
    }
}

/* Touch Improvements */
@media (pointer: coarse) {
    .btn-new,
    .nav-link,
    .mobile-link,
    .contact-btn,
    .back-to-top-new {
        min-height: 44px;
        min-width: 44px;
    }
    
    .nav-toggle {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Reduce animation on mobile */
    .avatar-glow {
        animation: none;
        opacity: 0.2;
    }
    
    .name-char {
        animation: none;
        opacity: 1;
    }
    
    /* Disable particles on mobile */
    .hero-particles {
        display: none;
    }
}

/* Landscape Mode */
@media (max-height: 500px) and (orientation: landscape) {
    .hero-new {
        min-height: auto;
        padding: 4rem 0 2rem;
    }
    
    .hero-content-new {
        flex-direction: row;
        gap: 2rem;
    }
    
    .avatar-main {
        width: 6rem;
        height: 6rem;
    }
    
    .hero-scroll {
        display: none;
    }
}

/* Safe Area for Notch */
@supports (padding-top: env(safe-area-inset-top)) {
    .nav-new {
        padding-top: env(safe-area-inset-top);
    }
    
    .hero-new {
        padding-top: calc(5rem + env(safe-area-inset-top));
    }
}

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