/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Цвета */
    --color-bg: #222222;
    --color-text: #111827;
    --color-text-light: #F9FAFB;
    --color-text-muted: #6B7280;
    --color-text-muted-dark: #D1D5DB;

    /* Accent цвет (золотой) */
    --color-accent: rgba(245, 158, 11, 0.6);
    --color-link: #3B82F6;

    /* Цвета иконок - брендовые цвета */
    --icon-portfolio: #F59E0B;
    --icon-resume: #3B82F6;
    --icon-phone: #6B7280;
    --icon-mail: #EA580C;
    --icon-telegram: #0088CC;
    --icon-whatsapp: #25D366;
    --icon-instagram: #E4405F;
    --icon-vk: #0077FF;
    --icon-youtube: #FF0000;
    --icon-github: #333333;
    --icon-blog: #0088CC;
    --icon-vc: #FF5A5F;

    /* Цвета иконок для тёмной темы (ярче) */
    --icon-portfolio-dark: #FCD34D;
    --icon-resume-dark: #60A5FA;
    --icon-phone-dark: #9CA3AF;
    --icon-mail-dark: #F97316;
    --icon-telegram-dark: #38BDF8;
    --icon-whatsapp-dark: #4ADE80;
    --icon-instagram-dark: #F472B6;
    --icon-vk-dark: #60A5FA;
    --icon-youtube-dark: #F87171;
    --icon-github-dark: #E5E7EB;
    --icon-blog-dark: #38BDF8;
    --icon-vc-dark: #FB7185;

    /* Размеры */
    --gap: 1rem;
    --radius: 1.5rem;
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.15);
    --shadow-hover-dark: 0 12px 40px rgba(0, 0, 0, 0.4);

    /* Hover эффекты */
    --hover-translate: -4px;
    --hover-scale: 1.02;
    --hover-border-width: 4px;

    /* Анимации */
    --animation-delay-step: 0.05s;
    --transition-default: 0.3s ease;

    /* Blur */
    --blur-amount: 16px;
    --blur-mobile: 12px;

    /* Overlay */
    --overlay-light: rgba(0, 0, 0, 0.3);
    --overlay-dark: rgba(0, 0, 0, 0.5);

    /* Category badges - светлая тема */
    --badge-work: rgba(245, 158, 11, 0.7);
    --badge-work-bg: rgba(245, 158, 11, 0.12);
    --badge-projects: rgba(139, 92, 246, 0.7);
    --badge-projects-bg: rgba(139, 92, 246, 0.10);
    --badge-contacts: rgba(107, 114, 128, 0.7);
    --badge-contacts-bg: rgba(107, 114, 128, 0.10);
    --badge-social: rgba(59, 130, 246, 0.7);
    --badge-social-bg: rgba(59, 130, 246, 0.10);

    /* Hover-обводки по категориям */
    --hover-border-work: rgba(245, 158, 11, 0.7);
    --hover-border-projects: rgba(139, 92, 246, 0.7);
    --hover-border-contacts: rgba(107, 114, 128, 0.7);
    --hover-border-social: rgba(59, 130, 246, 0.7);

    /* Фоны карточек */
    --card-bg: rgba(255, 255, 255, 1);
    --card-bg-dark: rgba(30, 30, 30, 0.75);
    --card-bg-dark-hover: rgba(40, 40, 40, 0.92);
    --card-shadow-dark: rgba(0, 0, 0, 0.3);

    /* Фоны кнопок управления */
    --btn-bg: rgba(255, 255, 255, 0.75);
    --btn-border: rgba(255, 255, 255, 0.3);
    --btn-bg-dark: rgba(30, 30, 30, 0.75);
    --btn-border-dark: rgba(255, 255, 255, 0.1);
}

/* Category badges - тёмная тема */
.dark {
    --badge-work: rgba(251, 191, 36, 0.8);
    --badge-work-bg: rgba(251, 191, 36, 0.15);
    --badge-projects: rgba(167, 139, 250, 0.8);
    --badge-projects-bg: rgba(167, 139, 250, 0.15);
    --badge-contacts: rgba(156, 163, 175, 0.8);
    --badge-contacts-bg: rgba(156, 163, 175, 0.15);
    --badge-social: rgba(96, 165, 250, 0.8);
    --badge-social-bg: rgba(96, 165, 250, 0.15);

    /* Hover-обводки по категориям - тёмная тема */
    --hover-border-work: rgba(251, 191, 36, 0.8);
    --hover-border-projects: rgba(167, 139, 250, 0.8);
    --hover-border-contacts: rgba(156, 163, 175, 0.8);
    --hover-border-social: rgba(96, 165, 250, 0.8);
}

/* Breakpoint-зависимые переменные */
@media (min-width: 768px) {
    :root {
        --hover-border-width: 6px;
    }
}

@media (min-width: 1200px) {
    :root {
        --hover-border-width: 6px;
    }
}

/* ========================================
   Background Video
   ======================================== */
#background-video {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -2;
    transform: translateX(-50%) translateY(-50%);
    object-fit: cover;
}

/* ========================================
   Overlay
   ======================================== */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--overlay-light);
    z-index: -1;
}

.dark body::before {
    background: var(--overlay-dark);
}

/* ========================================
   Glassmorphism Cards
   ======================================== */
.bento-card {
    position: relative;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform var(--transition-default), box-shadow var(--transition-default), background var(--transition-default);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 1.5rem;
    text-decoration: none;
    background: var(--card-bg);
    backdrop-filter: blur(var(--blur-amount)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--blur-amount)) saturate(180%);
    border: none;
}

.bento-card:hover {
    transform: translateY(var(--hover-translate)) scale(var(--hover-scale));
    box-shadow: var(--shadow-hover), inset 0 0 0 var(--hover-border-width) var(--color-accent);
    background: var(--card-bg);
}

/* Цветные hover-обводки по категориям */
.bento-card[data-category="work"]:hover {
    box-shadow: var(--shadow-hover), inset 0 0 0 var(--hover-border-width) var(--hover-border-work);
}

.bento-card[data-category="projects"]:hover {
    box-shadow: var(--shadow-hover), inset 0 0 0 var(--hover-border-width) var(--hover-border-projects);
}

.bento-card[data-category="contacts"]:hover {
    box-shadow: var(--shadow-hover), inset 0 0 0 var(--hover-border-width) var(--hover-border-contacts);
}

.bento-card[data-category="social"]:hover {
    box-shadow: var(--shadow-hover), inset 0 0 0 var(--hover-border-width) var(--hover-border-social);
}

/* Dark mode cards */
.dark .bento-card {
    background: var(--card-bg-dark);
    border: none;
    box-shadow: 0 4px 30px var(--card-shadow-dark);
}

.dark .bento-card:hover {
    background: var(--card-bg-dark-hover);
    box-shadow: var(--shadow-hover-dark), inset 0 0 0 var(--hover-border-width) var(--color-accent);
}

/* Цветные hover-обводки по категориям - тёмная тема */
.dark .bento-card[data-category="work"]:hover {
    box-shadow: var(--shadow-hover-dark), inset 0 0 0 var(--hover-border-width) var(--hover-border-work);
}

.dark .bento-card[data-category="projects"]:hover {
    box-shadow: var(--shadow-hover-dark), inset 0 0 0 var(--hover-border-width) var(--hover-border-projects);
}

.dark .bento-card[data-category="contacts"]:hover {
    box-shadow: var(--shadow-hover-dark), inset 0 0 0 var(--hover-border-width) var(--hover-border-contacts);
}

.dark .bento-card[data-category="social"]:hover {
    box-shadow: var(--shadow-hover-dark), inset 0 0 0 var(--hover-border-width) var(--hover-border-social);
}

/* ========================================
   Profile Card
   ======================================== */
.card-profile {
    text-align: center;
    align-items: center;
}

.card-profile:hover {
    box-shadow: var(--shadow-hover);
}

.dark .card-profile:hover {
    box-shadow: var(--shadow-hover-dark);
}


/* ========================================
   Icon Colors
   ======================================== */
.icon-portfolio { color: var(--icon-portfolio); }
.icon-resume { color: var(--icon-resume); }
.icon-phone { color: var(--icon-phone); }
.icon-mail { color: var(--icon-mail); }
.icon-telegram { color: var(--icon-telegram); }
.icon-whatsapp { color: var(--icon-whatsapp); }
.icon-instagram { color: var(--icon-instagram); }
.icon-vk { color: var(--icon-vk); fill: currentColor; }
.icon-youtube { color: var(--icon-youtube); }
.icon-github { color: var(--icon-github); }
.icon-blog { color: var(--icon-blog); }
.icon-vc { color: var(--icon-vc); fill: currentColor; }

/* Dark mode icons (brighter) */
.dark .icon-portfolio { color: var(--icon-portfolio-dark); }
.dark .icon-resume { color: var(--icon-resume-dark); }
.dark .icon-phone { color: var(--icon-phone-dark); }
.dark .icon-mail { color: var(--icon-mail-dark); }
.dark .icon-telegram { color: var(--icon-telegram-dark); }
.dark .icon-whatsapp { color: var(--icon-whatsapp-dark); }
.dark .icon-instagram { color: var(--icon-instagram-dark); }
.dark .icon-vk { color: var(--icon-vk-dark); }
.dark .icon-youtube { color: var(--icon-youtube-dark); }
.dark .icon-github { color: var(--icon-github-dark); }
.dark .icon-blog { color: var(--icon-blog-dark); }
.dark .icon-vc { color: var(--icon-vc-dark); }

/* ========================================
   Card Text
   ======================================== */
.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.card-description {
    font-size: 0.875rem;
    color: var(--color-text);
}

.dark .card-title {
    color: var(--color-text-light);
}

.dark .card-description {
    color: var(--color-text-light);
}

/* ========================================
   Profile
   ======================================== */
.profile-image-wrapper {
    position: relative;
    width: 10rem;
    height: 10rem;
    margin-bottom: 1rem;
}

.profile-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    transition: opacity var(--transition-default);
    position: absolute;
    top: 0;
    left: 0;
}

.profile-image--hover {
    opacity: 0;
}

.card-profile:hover .profile-image--default {
    opacity: 0;
}

.card-profile:hover .profile-image--hover {
    opacity: 1;
}

.profile-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.dark .profile-title {
    color: var(--color-text-light);
}

.profile-description {
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.6;
}

.dark .profile-description {
    color: var(--color-text-light);
}

.inline-link {
    color: var(--color-link);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.inline-link:hover {
    border-bottom-color: var(--color-link);
}

/* ========================================
   Control Buttons
   ======================================== */
.control-btn {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    background: var(--btn-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--btn-border);
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
}

.dark .control-btn {
    background: var(--btn-bg-dark);
    border: 1px solid var(--btn-border-dark);
    color: var(--color-text-light);
}

.control-btn:hover {
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

/* Language Toggle - Golden Pulse */
#lang-toggle {
    animation: lang-pulse 2.5s ease-in-out infinite;
}

@keyframes lang-pulse {
    0%, 100% {
        box-shadow: var(--shadow), 0 0 0 0 transparent;
    }
    50% {
        box-shadow: var(--shadow), 0 0 12px 2px var(--color-accent);
    }
}

/* Theme Toggle - Day/Night Gradient */
#theme-toggle {
    position: relative;
}

#theme-toggle::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: linear-gradient(135deg, #fcd34d, #f97316, #6366f1, #1e3a8a, #fcd34d);
    background-size: 300% 300%;
    animation: day-night 6s ease infinite;
    z-index: -1;
}

#theme-toggle::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--btn-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
}

.dark #theme-toggle::after {
    background: var(--btn-bg-dark);
}

#theme-toggle > * {
    position: relative;
    z-index: 1;
}

@keyframes day-night {
    0% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
    100% { background-position: 0% 0%; }
}

/* ========================================
   Lenis
   ======================================== */
html.lenis {
    height: auto;
}

.lenis.lenis-smooth {
    scroll-behavior: auto;
}

/* ========================================
   Fade-in Animation
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Animation delays using CSS variable */
.fade-in-delay-1 { animation-delay: calc(1 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-2 { animation-delay: calc(2 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-3 { animation-delay: calc(3 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-4 { animation-delay: calc(4 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-5 { animation-delay: calc(5 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-6 { animation-delay: calc(6 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-7 { animation-delay: calc(7 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-8 { animation-delay: calc(8 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-9 { animation-delay: calc(9 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-10 { animation-delay: calc(10 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-11 { animation-delay: calc(11 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-12 { animation-delay: calc(12 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-13 { animation-delay: calc(13 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-14 { animation-delay: calc(14 * var(--animation-delay-step)); opacity: 0; }
.fade-in-delay-15 { animation-delay: calc(15 * var(--animation-delay-step)); opacity: 0; }

/* ========================================
   Mobile Styles
   ======================================== */
@media (max-width: 767px) {
    .bento-card {
        background: var(--card-bg);
        backdrop-filter: blur(var(--blur-mobile));
        -webkit-backdrop-filter: blur(var(--blur-mobile));
    }

    .dark .bento-card {
        background: var(--card-bg-dark-hover);
    }

    .category-badge {
        top: 8px;
        right: 8px;
        width: 24px;
        height: 24px;
        opacity: 1;
    }

    .category-badge svg {
        width: 14px;
        height: 14px;
    }
}

/* ========================================
   Category Badges
   ======================================== */
.category-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    opacity: 0.8;
    transition: opacity var(--transition-default), transform 0.2s ease;
    cursor: pointer;
}

.category-badge:hover {
    transform: scale(1.15);
}

.category-badge:active {
    transform: scale(0.95);
}

.bento-card:hover .category-badge {
    opacity: 1;
}

.category-badge--work {
    background: var(--badge-work-bg);
    color: var(--badge-work);
}

.category-badge--projects {
    background: var(--badge-projects-bg);
    color: var(--badge-projects);
}

.category-badge--contacts {
    background: var(--badge-contacts-bg);
    color: var(--badge-contacts);
}

.category-badge--social {
    background: var(--badge-social-bg);
    color: var(--badge-social);
}

/* ========================================
   Copy Tooltip
   ======================================== */
.copy-tooltip {
    position: fixed;
    z-index: 9999;
    padding: 0.5rem 0.75rem;
    background: var(--card-bg);
    color: var(--color-text);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    opacity: 0;
    transform: translate(-50%, -100%) scale(0.8);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    white-space: nowrap;
}

.copy-tooltip--visible {
    opacity: 1;
    transform: translate(-50%, -100%) scale(1);
}

.copy-tooltip--hiding {
    opacity: 0;
    transform: translate(-50%, -100%) translateY(-5px);
}

.dark .copy-tooltip {
    background: var(--card-bg-dark-hover);
    color: var(--color-text-light);
}

/* ========================================
   Performance Optimizations
   ======================================== */

/* Отключение видео на мобильных для экономии трафика и GPU */
@media (max-width: 768px) {
    #background-video {
        display: none;
    }

    body {
        background: url('../images/bg.jpg') no-repeat center center fixed;
        background-size: cover;
    }
}

/* Отключение blur на мобильных для производительности GPU */
@media (max-width: 768px) {
    .bento-card,
    .control-btn,
    .copy-tooltip,
    #theme-toggle::after {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .bento-card {
        background: rgba(255, 255, 255, 0.95);
    }

    .dark .bento-card {
        background: rgba(30, 30, 30, 0.95);
    }

    .control-btn {
        background: rgba(255, 255, 255, 0.95);
    }

    .dark .control-btn,
    .dark #theme-toggle::after {
        background: rgba(30, 30, 30, 0.95);
    }
}

/* Отключение анимаций для пользователей с соответствующей настройкой */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}