/* ===============================
   СОВРЕМЕННЫЕ CSS ПЕРЕМЕННЫЕ
   =============================== */
   :root {
    /* Типографика */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Цветовая палитра */
    --primary: #007bff;
    --primary-dark: #0056b3;
    --secondary: #6c757d;
    --success: #28a745;
    --success-light: #20c997;
    --info: #17a2b8;
    --warning: #ffc107;
    --warning-dark: #e0a800;
    --danger: #dc3545;
    --danger-dark: #c82333;
    --light: #f8f9fa;
    --dark: #343a40;
    
    /* Размеры border-radius */
    --border-radius-xs: 6px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-radius-full: 50%;
    
    /* Тени */
    --shadow-xs: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-sm: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-md: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
    --shadow-lg: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
    --shadow-xl: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
    
    /* Переходы */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===============================
   ГЛОБАЛЬНЫЕ УЛУЧШЕНИЯ
   =============================== */

/* Улучшенный scrollbar для всех элементов */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary) rgba(255,255,255,0.1);
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius-xs);
}

*::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
    border-radius: var(--border-radius-xs);
    transition: all var(--transition-medium);
}

*::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-dark), #004085);
    transform: scale(1.1);
}

/* Улучшенный selection */
::selection {
    background: rgba(0, 123, 255, 0.3);
    color: #ffffff;
    text-shadow: none;
}

/* ===============================
   УТИЛИТАРНЫЕ КЛАССЫ
   =============================== */

/* Glassmorphism utilities */
.glass {
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.06) 100%);
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.15);
}

.glass-light {
    background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.08) 100%);
    backdrop-filter: blur(20px) saturate(200%);
    -webkit-backdrop-filter: blur(20px) saturate(200%);
    border: 1px solid rgba(255,255,255,0.2);
}

.glass-strong {
    background: linear-gradient(135deg, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0.12) 100%);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.3);
}

/* Shadow utilities */
.shadow-glow {
    box-shadow: 0 0 20px rgba(0, 123, 255, 0.3);
}

.shadow-glow-success {
    box-shadow: 0 0 20px rgba(40, 167, 69, 0.3);
}

.shadow-glow-warning {
    box-shadow: 0 0 20px rgba(255, 193, 7, 0.3);
}

.shadow-glow-danger {
    box-shadow: 0 0 20px rgba(220, 53, 69, 0.3);
}

/* Gradient utilities */
.gradient-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.gradient-success {
    background: linear-gradient(135deg, var(--success), var(--success-light));
}

.gradient-warning {
    background: linear-gradient(135deg, var(--warning), var(--warning-dark));
}

.gradient-danger {
    background: linear-gradient(135deg, var(--danger), var(--danger-dark));
}

.gradient-rainbow {
    background: linear-gradient(135deg, var(--primary), #6f42c1, var(--success), var(--warning));
}

/* ===============================
   КНОПКИ УЛУЧШЕНИЯ
   =============================== */

.btn-modern {
    position: relative;
    overflow: hidden;
    border: none;
    border-radius: var(--border-radius-sm);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-smooth);
    text-transform: none;
    letter-spacing: 0.02em;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
    transition: all 0.6s ease;
}

.btn-modern:hover::before {
    left: 100%;
}

.btn-modern:hover {
    transform: translateY(-2px);
}

.btn-modern:active {
    transform: translateY(0);
}

.btn-glow {
    box-shadow: 
        0 8px 25px rgba(0,0,0,0.15),
        0 0 0 1px rgba(255,255,255,0.1) inset;
}

.btn-glow:hover {
    box-shadow: 
        0 15px 35px rgba(0,0,0,0.25),
        0 0 0 1px rgba(255,255,255,0.2) inset;
}

/* ===============================
   КАРТОЧКИ УЛУЧШЕНИЯ
   =============================== */

.card-modern {
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.06) 100%);
    backdrop-filter: blur(15px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-smooth);
    overflow: hidden;
    position: relative;
}

.card-modern:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(255,255,255,0.25);
}

.card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-rainbow);
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.card-status {
    position: relative;
    overflow: hidden;
}

.card-status::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.card-status.status-active::before {
    background: linear-gradient(90deg, var(--success), var(--success-light));
    animation: pulse-success 2s ease-in-out infinite;
}

.card-status.status-warning::before {
    background: linear-gradient(90deg, var(--warning), var(--warning-dark));
    animation: pulse-warning 1.5s ease-in-out infinite;
}

.card-status.status-danger::before {
    background: linear-gradient(90deg, var(--danger), var(--danger-dark));
    animation: pulse-danger 3s ease-in-out infinite;
}

@keyframes pulse-success {
    0%, 100% { opacity: 1; box-shadow: 0 0 15px rgba(40, 167, 69, 0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 25px rgba(40, 167, 69, 0.7); }
}

@keyframes pulse-warning {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

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

/* ===============================
   ФОРМЫ УЛУЧШЕНИЯ
   =============================== */

.form-modern .form-control {
    background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.08));
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--border-radius-sm);
    color: #ffffff;
    transition: all var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.form-modern .form-control:focus {
    background: linear-gradient(135deg, rgba(255,255,255,0.18), rgba(255,255,255,0.12));
    border-color: var(--primary);
    box-shadow: 
        0 0 0 0.2rem rgba(0, 123, 255, 0.25),
        var(--shadow-sm);
    transform: translateY(-1px);
}

.form-modern .form-label {
    color: rgba(255,255,255,0.9);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
}

/* ===============================
   АНИМАЦИИ
   =============================== */

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.fade-in-down {
    animation: fadeInDown 0.8s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 0.8s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease-out;
}

.zoom-in {
    animation: zoomIn 0.6s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    0% {
        opacity: 0;
        transform: translateX(-30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    0% {
        opacity: 0;
        transform: translateX(30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes zoomIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================
   HOVER ЭФФЕКТЫ
   =============================== */

.hover-lift {
    transition: all var(--transition-medium);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: all var(--transition-medium);
}

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

.hover-glow {
    transition: all var(--transition-medium);
}

.hover-glow:hover {
    box-shadow: 0 0 25px rgba(0, 123, 255, 0.4);
}

/* ===============================
   ИНДИКАТОРЫ ЗАГРУЗКИ
   =============================== */

.loading-skeleton {
    background: linear-gradient(90deg, 
        rgba(255,255,255,0.1) 25%, 
        rgba(255,255,255,0.2) 50%, 
        rgba(255,255,255,0.1) 75%);
    background-size: 200% 100%;
    animation: loading-shimmer 1.5s infinite;
    border-radius: var(--border-radius-xs);
}

@keyframes loading-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.spinner-modern {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===============================
   СТАТУС BADGES
   =============================== */

.badge-modern {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all var(--transition-medium);
}

.badge-modern:hover {
    transform: scale(1.05);
}

.badge-modern.badge-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.3), rgba(40, 167, 69, 0.2));
    color: #ffffff;
}

.badge-modern.badge-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.3), rgba(255, 193, 7, 0.2));
    color: #ffffff;
}

.badge-modern.badge-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.3), rgba(220, 53, 69, 0.2));
    color: #ffffff;
}

/* ===============================
   ТАБЛИЦЫ УЛУЧШЕНИЯ
   =============================== */

.table-modern {
    background: transparent;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.table-modern thead {
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.08) 100%);
}

.table-modern thead th {
    color: rgba(255,255,255,0.9);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.85rem;
    padding: var(--spacing-lg);
    border: none;
}

.table-modern tbody tr {
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
    transition: all var(--transition-medium);
}

.table-modern tbody tr:hover {
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.08) 100%);
    transform: scale(1.01);
}

.table-modern tbody td {
    color: #ffffff;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* ===============================
   RESPONSIVE УТИЛИТЫ
   =============================== */

@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
    .show-mobile { display: block !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
    .show-desktop { display: block !important; }
}

/* ===============================
   ACCESSIBILITY УЛУЧШЕНИЯ
   =============================== */

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    .glass,
    .glass-light,
    .glass-strong {
        background: rgba(0, 0, 0, 0.8);
        border: 2px solid #ffffff;
    }
}

/* ===============================
   ДОПОЛНИТЕЛЬНЫЕ КОМПОНЕНТЫ
   =============================== */

.notification-dot {
    position: relative;
}

.notification-dot::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: var(--border-radius-full);
    border: 2px solid rgba(255,255,255,0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.progress-modern {
    background: rgba(255,255,255,0.1);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    height: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1) inset;
}

.progress-modern .progress-bar {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--border-radius-full);
    transition: width 0.6s ease;
    position: relative;
    overflow: hidden;
}

.progress-modern .progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: progress-shine 2s infinite;
}

@keyframes progress-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}