* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #13131f;
    --bg-card: rgba(255, 255, 255, 0.03);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent-blue: #667eea;
    --accent-purple: #764ba2;
    --accent-telegram: #0088cc;
    --accent-facebook: #1877f2;
    --accent-phone: #10b981;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --glow-color: rgba(102, 126, 234, 0.15);
}

body {
    font-family: 'Noto Sans Khmer', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 50% 50%, rgba(102, 126, 234, 0.03) 0%, transparent 70%);
    animation: backgroundShift 20s ease-in-out infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes backgroundShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-2%, 2%) rotate(1deg); }
    66% { transform: translate(2%, -1%) rotate(-1deg); }
}

.container {
    width: 100%;
    max-width: 480px;
    position: relative;
    z-index: 1;
}

.profile-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 32px;
    box-shadow: 0 8px 32px var(--shadow-color),
                0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    position: relative;
    overflow: hidden;
    animation: cardEntry 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes cardEntry {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.avatar-section {
    text-align: center;
    margin-bottom: 32px;
}

.avatar-ring {
    display: inline-block;
    position: relative;
    margin-bottom: 20px;
}

.avatar-svg {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: block;
    animation: avatarFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 20px rgba(102, 126, 234, 0.3));
}

@keyframes avatarFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.avatar-text {
    display: block;
}

.avatar-image {
    display: none;
}

.avatar-bg {
    animation: avatarPulse 3s ease-in-out infinite;
}

@keyframes avatarPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

.status-indicator {
    position: absolute;
    bottom: 6px;
    right: 6px;
    width: 18px;
    height: 18px;
    background: #10b981;
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
}

.name {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.title {
    font-size: 15px;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.3px;
}

.bio-section {
    margin-bottom: 32px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.bio-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: center;
    font-weight: 400;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.contact-card {
    display: block;
    text-decoration: none;
    color: inherit;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    opacity: 1;
    transform: translateY(0);
}

.contact-card.hidden {
    display: none;
}

.contact-card:hover {
    transform: translateY(-3px) scale(1.02);
}

.card-inner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.contact-card:hover .card-inner {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
}

.card-glow {
    position: absolute;
    inset: 0;
    border-radius: 16px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.contact-card.phone .card-glow {
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.2), inset 0 0 30px rgba(16, 185, 129, 0.05);
}

.contact-card.telegram .card-glow {
    box-shadow: 0 0 30px rgba(0, 136, 204, 0.2), inset 0 0 30px rgba(0, 136, 204, 0.05);
}

.contact-card.facebook .card-glow {
    box-shadow: 0 0 30px rgba(24, 119, 242, 0.2), inset 0 0 30px rgba(24, 119, 242, 0.05);
}

.contact-card:hover .card-glow {
    opacity: 1;
}

.icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
}

.phone .icon-wrapper {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-phone);
}

.telegram .icon-wrapper {
    background: rgba(0, 136, 204, 0.1);
    color: var(--accent-telegram);
}

.facebook .icon-wrapper {
    background: rgba(24, 119, 242, 0.1);
    color: var(--accent-facebook);
}

.contact-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.contact-card:hover .contact-icon {
    transform: scale(1.15) rotate(5deg);
}

.contact-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 500;
}

.contact-value {
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
    letter-spacing: 0.2px;
}

.contact-arrow {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.contact-card:hover .contact-arrow {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: translateX(3px);
}

.contact-arrow svg {
    transition: transform 0.3s ease;
}

.contact-card:hover .contact-arrow svg {
    transform: translateX(2px);
}

.footer-section {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 400;
}

.admin-link {
    display: inline-block;
    font-size: 11px;
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s ease;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.admin-link:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

/* Theme toggle */
.theme-toggle {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: rotate(15deg);
}

.theme-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: none;
}

/* Admin theme toggle positioning */
.admin-container {
    position: relative;
}

.admin-container .theme-toggle {
    position: absolute;
    top: 0;
    right: 0;
}

[data-theme="light"] .theme-toggle {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--border-color);
}

[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.08);
}

/* Light mode */
[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --text-primary: #1a1a2e;
    --text-secondary: rgba(26, 26, 46, 0.7);
    --text-muted: rgba(26, 26, 46, 0.5);
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.08);
    --glow-color: rgba(102, 126, 234, 0.1);
}

[data-theme="light"] body {
    background: var(--bg-primary);
}

[data-theme="light"] body::before {
    background: radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 50% 50%, rgba(102, 126, 234, 0.03) 0%, transparent 70%);
}

[data-theme="light"] .profile-card {
    background: var(--bg-card);
    box-shadow: 0 8px 32px var(--shadow-color), 0 0 0 1px rgba(0, 0, 0, 0.05) inset;
    border-color: var(--border-color);
}

[data-theme="light"] .profile-card::before {
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.2), transparent);
}

[data-theme="light"] .bio-section {
    background: rgba(0, 0, 0, 0.02);
    border-color: var(--border-color);
}

[data-theme="light"] .card-inner {
    background: rgba(0, 0, 0, 0.02);
    border-color: var(--border-color);
}

[data-theme="light"] .contact-card:hover .card-inner {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .contact-arrow {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-muted);
}

[data-theme="light"] .contact-card:hover .contact-arrow {
    background: rgba(0, 0, 0, 0.08);
    color: var(--text-primary);
}

[data-theme="light"] .admin-link:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group select {
    background: rgba(0, 0, 0, 0.02);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="light"] .form-group input:focus,
[data-theme="light"] .form-group select:focus {
    background: rgba(0, 0, 0, 0.04);
    border-color: var(--accent-blue);
}

[data-theme="light"] .admin-section {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="light"] .login-error {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.15);
}

[data-theme="light"] .btn-save {
    color: white;
}

/* Dark mode (default) */
[data-theme="dark"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #13131f;
    --bg-card: rgba(255, 255, 255, 0.03);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent-blue: #667eea;
    --accent-purple: #764ba2;
    --accent-telegram: #0088cc;
    --accent-facebook: #1877f2;
    --accent-phone: #10b981;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --glow-color: rgba(102, 126, 234, 0.15);
}

/* Mobile optimizations */
@media (max-width: 480px) {
    .theme-toggle {
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
    }

    .theme-icon {
        width: 18px;
        height: 18px;
    }

    .profile-card {
        padding: 32px 20px;
        border-radius: 20px;
    }

    .avatar-svg {
        width: 80px;
        height: 80px;
    }

    .name {
        font-size: 24px;
    }

    .title {
        font-size: 14px;
    }

    .card-inner {
        padding: 16px;
        gap: 14px;
    }

    .icon-wrapper {
        width: 44px;
        height: 44px;
    }

    .contact-icon {
        width: 22px;
        height: 22px;
    }

    .contact-value {
        font-size: 14px;
    }

    .contact-arrow {
        width: 28px;
        height: 28px;
    }
}

/* Tablet and up */
@media (min-width: 768px) {
    .profile-card {
        padding: 48px 40px;
    }

    .contact-links {
        gap: 14px;
    }

    .card-inner {
        padding: 20px 24px;
    }
}

/* Animations for icons */
.phone .icon-wrapper svg {
    animation: phonePulse 2s ease-in-out infinite;
}

@keyframes phonePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

.telegram .icon-wrapper svg {
    animation: telegramWave 3s ease-in-out infinite;
}

@keyframes telegramWave {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-2px) rotate(3deg); }
    75% { transform: translateY(2px) rotate(-3deg); }
}

.facebook .icon-wrapper svg {
    animation: facebookShake 4s ease-in-out infinite;
}

@keyframes facebookShake {
    0%, 100% { transform: rotate(0deg); }
    10%, 30% { transform: rotate(-2deg); }
    20%, 40% { transform: rotate(2deg); }
}

/* Page load animation */
.profile-card {
    animation: cardEntry 0.8s cubic-bezier(0.34, 1.56, 0.64, 1),
               cardGlow 3s ease-in-out 0.8s infinite;
}

@keyframes cardGlow {
    0%, 100% { box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05) inset; }
    50% { box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 40px rgba(102, 126, 234, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.05) inset; }
}

/* Staggered entrance for contact cards */
.contact-card:nth-child(1) { animation: slideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both; }
.contact-card:nth-child(2) { animation: slideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.35s both; }
.contact-card:nth-child(3) { animation: slideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.5s both; }

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Disabled state */
.contact-card.disabled {
    opacity: 0.3;
    pointer-events: none;
    filter: grayscale(1);
}

.contact-card.disabled .card-inner {
    background: rgba(255, 255, 255, 0.01);
    border-color: rgba(255, 255, 255, 0.03);
}

/* Loading state */
body.loading .contact-card {
    opacity: 0;
    animation: none;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}

/* Focus states for accessibility */
.contact-card:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}