/* ========================================
   ОБЩИЕ СТИЛИ - COMMON.CSS (2026 Glassmorphism)
   Современный дизайн с эффектом стекла
======================================== */

/* ========== CSS ПЕРЕМЕННЫЕ ========== */
:root {
  /* Фиолетовая палитра - акценты */
  --primary: #a855f7;
  --primary-dark: #7c3aed;
  --primary-light: #c084fc;
  --secondary: #d946ef;
  --accent: #e879f9;

  /* ТЕМНЫЙ градиентный фон (оптимизированный) */
  --background: #050211;
  --background-secondary: #0a0420;
  --background-gradient: linear-gradient(135deg, #050211 0%, #0a0420 100%);

  /* Glassmorphism эффекты (облегченные для мобильных) */
  --glass-bg: rgba(15, 5, 30, 0.75);
  --glass-bg-light: rgba(20, 8, 40, 0.65);
  --glass-border: rgba(168, 85, 247, 0.15);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  --glass-blur: blur(12px);

  /* Текстовые цвета */
  --text: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  /* Специальные эффекты */
  --glow: rgba(168, 85, 247, 0.5);
  --glow-strong: rgba(168, 85, 247, 0.8);
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-strong: 0 16px 48px rgba(0, 0, 0, 0.6);

  /* Системные цвета */
  --danger: #f43f5e;
  --success: #22c55e;
  --warning: #fbbf24;
  --info: #8b5cf6;
}

/* ========== БАЗОВЫЕ СТИЛИ ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--background);
  background-image: var(--background-gradient);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

/* Плавно меняющийся градиентный фон (ОПТИМИЗИРОВАНО) */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      ellipse at 30% 20%,
      rgba(168, 85, 247, 0.08) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse at 70% 70%,
      rgba(217, 70, 239, 0.06) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse at 50% 50%,
      rgba(124, 58, 237, 0.04) 0%,
      transparent 70%
    );
  animation: gradientShift 20s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
  will-change: opacity;
}

/* Оптимизированная анимация только opacity */
@keyframes gradientShift {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Отключение анимаций на слабых устройствах */
@media (prefers-reduced-motion: reduce) {
  body::before {
    animation: none;
  }
}

/* ========== ТИПОГРАФИЯ ========== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
  color: var(--accent);
  text-shadow: 0 0 20px var(--glow);
}

/* ========== GLASSMORPHISM КНОПКИ ========== */
.btn {
  padding: 14px 32px;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
  display: inline-block;
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  z-index: 1;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.4);
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px var(--glow-strong);
  background: linear-gradient(
    135deg,
    var(--primary-light) 0%,
    var(--accent) 100%
  );
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
}

.btn-secondary:hover {
  background: var(--glass-bg-light);
  border-color: var(--primary);
  box-shadow: 0 0 24px var(--glow);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
  color: var(--text);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: linear-gradient(135deg, #ef4444 0%, var(--danger) 100%);
  box-shadow: 0 8px 24px rgba(244, 63, 94, 0.4);
  transform: translateY(-3px);
}

/* ========== GLASSMORPHISM КАРТОЧКИ (ОПТИМИЗИРОВАНО) ========== */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow-medium);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  z-index: 1;
  will-change: transform;
}

.card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: -1;
}

.card:hover::before {
  opacity: 0.15;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-strong), 0 0 40px var(--glow);
  border-color: var(--primary);
}

/* ========== GLASSMORPHISM ФОРМЫ ========== */
.form-group {
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-light);
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="file"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  color: var(--text);
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.2), var(--shadow-soft);
  background: var(--glass-bg-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========== ГРАДИЕНТНЫЙ ТЕКСТ ========== */
.gradient-text {
  background: linear-gradient(
    135deg,
    var(--primary-light) 0%,
    var(--accent) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ========== GLASSMORPHISM МОДАЛЬНЫЕ ОКНА ========== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  overflow-y: auto;
  padding: 20px;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 36px;
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow-strong), 0 0 60px var(--glow);
  position: relative;
  animation: modalSlideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* ========== ПЛАВНЫЕ АНИМАЦИИ ========== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Оптимизированные анимации с will-change */
@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

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

@keyframes slideIn {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* ========== УТИЛИТЫ ========== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.d-flex {
  display: flex;
}

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

.align-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-10 {
  gap: 10px;
}

.gap-20 {
  gap: 20px;
}

.mt-10 {
  margin-top: 10px;
}

.mt-20 {
  margin-top: 20px;
}

.mb-10 {
  margin-bottom: 10px;
}

.mb-20 {
  margin-bottom: 20px;
}

/* ========== СТИЛИЗОВАННЫЙ СКРОЛЛБАР ========== */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--glass-bg);
  border-radius: 12px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 12px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    135deg,
    var(--primary-light) 0%,
    var(--accent) 100%
  );
  background-clip: padding-box;
}

/* ========== АДАПТИВНОСТЬ ДЛЯ МОБИЛЬНЫХ (ОПТИМИЗИРОВАНО) ========== */
@media (max-width: 1200px) {
  body {
    padding: 16px;
  }
}

@media (max-width: 768px) {
  /* Упрощение blur для производительности на мобильных */
  :root {
    --glass-blur: blur(8px);
  }

  body {
    padding: 12px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.95rem;
  }

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

  .modal-content {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  /* Минимальный blur для слабых устройств */
  :root {
    --glass-blur: blur(6px);
  }

  body::before {
    /* Упрощенная анимация для телефонов */
    animation: gradientShift 30s ease-in-out infinite;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    border-radius: 12px;
  }

  .card {
    padding: 16px;
    border-radius: 16px;
  }

  .modal-content {
    padding: 20px;
    border-radius: 20px;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    font-size: 0.9rem;
  }
}