/* ============================================
   LOGIN PAGE CSS - کاملاً ریسپانسیو
   ============================================ */

/* --- متغیرهای رنگ تم نارنجی برای غذا --- */
:root {
  /* رنگ اصلی نارنجی */
  --primary-orange: #ff8c42;
  --primary-orange-light: #ffb347;
  --primary-orange-dark: #e67e22;

  /* رنگ‌های تم تاریک (داک مود) */
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #334155;

  /* رنگ‌های متن */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* رنگ‌های وضعیت */
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;

  /* ابعاد و فاصله‌ها */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* سایه‌ها */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --shadow-orange: 0 4px 20px rgba(255, 140, 66, 0.3);

  /* انیمیشن */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

/* --- Reset & Base Styles --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  direction: rtl;
  overflow-x: hidden;
}

/* --- Container برای مرورگرهای قدیمی --- */
@media (min-width: 1200px) {
  html {
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }
}

/* --- کارت لاگین --- */
.login-card {
  width: 100%;
  max-width: 440px;
  min-width: 280px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  animation: cardEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* جلوه‌ی نوری در پس‌زمینه */
.login-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 140, 66, 0.1) 0%,
    rgba(255, 140, 66, 0.05) 25%,
    transparent 70%
  );
  z-index: 0;
  pointer-events: none;
}

.login-card > * {
  position: relative;
  z-index: 1;
}

/* --- هدر لاگین --- */
.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.login-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(
    135deg,
    var(--primary-orange),
    var(--primary-orange-dark)
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-orange);
  position: relative;
  animation: iconFloat 3s ease-in-out infinite;
}

.login-icon svg {
  width: 32px;
  height: 32px;
  fill: white;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.login-header h1 {
  font-size: 1.8rem;
  font-weight: 900;
  margin: 0 0 0.5rem 0;
  background: linear-gradient(
    45deg,
    var(--primary-orange),
    var(--primary-orange-light)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
  font-weight: 400;
  opacity: 0.9;
}

/* --- گروه‌های ورودی --- */
.input-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.input-group input {
  width: 100%;
  height: 56px;
  padding: 0 52px 0 16px;
  background: var(--bg-input);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: inherit; /* این خط خوب است، فونت از body به ارث می‌رسد */
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  caret-color: var(--primary-orange);
}

.input-group input:hover {
  border-color: rgba(255, 140, 66, 0.3);
}

.input-group input:focus {
  outline: none;
  border-color: var(--primary-orange);
  box-shadow: 0 0 0 4px rgba(255, 140, 66, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

.input-group input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.input-group-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-normal);
}

.input-group input:focus + .input-group-icon {
  color: var(--primary-orange);
}

.input-group input:valid + .input-group-icon {
  color: var(--success);
}

/* --- دکمه‌ها --- */
.btn-primary {
  width: 100%;
  height: 56px;
  border-radius: var(--radius-lg);
  border: none;
  font-family: inherit; /* این خط خوب است، فونت از body به ارث می‌رسد */
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: linear-gradient(
    135deg,
    var(--primary-orange),
    var(--primary-orange-dark)
  );
  color: white;
  box-shadow: var(--shadow-orange);
  position: relative;
  overflow: hidden;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 30px rgba(255, 140, 66, 0.4),
    0 0 0 1px rgba(255, 140, 66, 0.1);
}

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

.btn-primary:active {
  transform: translateY(0);
  transition: transform 100ms ease;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* --- پیام‌ها --- */
.message {
  padding: 1rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid;
  animation: messageSlide 0.3s ease-out;
  display: none;
}

.message.show {
  display: block;
}

.message.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.3);
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border-color: rgba(239, 68, 68, 0.3);
}

.message.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.3);
}

/* --- لینک‌ها --- */
.back-link {
  display: block;
  text-align: center;
  margin-top: 2rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  position: relative;
}

.back-link::before {
  content: "←";
  margin-left: 0.5rem;
  display: inline-block;
  transition: transform var(--transition-fast);
}

.back-link:hover {
  color: var(--primary-orange);
  background: rgba(255, 140, 66, 0.05);
  padding: 0.5rem 1rem;
}

.back-link:hover::before {
  transform: translateX(-3px);
}

/* --- بخش اضافی: فراموشی رمز --- */
.forgot-password {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.forgot-password a {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.forgot-password a:hover {
  color: var(--primary-orange);
  text-decoration: underline;
}

/* --- انیمیشن‌ها --- */
@keyframes cardEntrance {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

@keyframes messageSlide {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- ریسپانسیو برای موبایل --- */
@media (max-width: 768px) {
  .login-card {
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin: 1rem;
  }

  .login-icon {
    width: 60px;
    height: 60px;
  }

  .login-icon svg {
    width: 28px;
    height: 28px;
  }

  .login-header h1 {
    font-size: 1.6rem;
  }

  .input-group input {
    height: 52px;
    font-size: 0.95rem;
  }

  .btn-primary {
    height: 52px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 12px;
    align-items: flex-start;
    padding-top: 40px;
  }

  .login-card {
    padding: 1.75rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
  }

  .login-header {
    margin-bottom: 2rem;
  }

  .login-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 1rem;
  }

  .login-icon svg {
    width: 24px;
    height: 24px;
  }

  .login-header h1 {
    font-size: 1.4rem;
  }

  .login-header p {
    font-size: 0.875rem;
  }

  .input-group {
    margin-bottom: 1.25rem;
  }

  .input-group input {
    height: 48px;
    font-size: 0.9rem;
    padding: 0 48px 0 14px;
  }

  .input-group-icon {
    width: 20px;
    height: 20px;
    left: 16px;
  }

  .btn-primary {
    height: 48px;
    font-size: 0.95rem;
  }

  .message {
    font-size: 0.85rem;
    padding: 0.875rem;
  }

  .back-link {
    margin-top: 1.5rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 360px) {
  .login-card {
    padding: 1.5rem 1.25rem;
  }

  .login-header h1 {
    font-size: 1.3rem;
  }

  .input-group input {
    height: 44px;
    font-size: 0.85rem;
  }

  .btn-primary {
    height: 44px;
    font-size: 0.9rem;
  }
}

/* --- ریسپانسیو برای تبلت و دسکتاپ --- */
@media (min-width: 769px) and (max-width: 1024px) {
  .login-card {
    max-width: 480px;
    padding: 3rem;
  }

  .login-icon {
    width: 80px;
    height: 80px;
  }

  .login-icon svg {
    width: 36px;
    height: 36px;
  }
}

@media (min-width: 1025px) {
  body {
    padding: 20px;
  }

  .login-card {
    padding: 3.5rem;
    max-width: 500px;
  }

  .login-icon {
    width: 90px;
    height: 90px;
  }

  .login-icon svg {
    width: 40px;
    height: 40px;
  }

  .login-header h1 {
    font-size: 2rem;
  }

  .login-header p {
    font-size: 1rem;
  }
}

/* --- پشتیبانی از landscape موبایل --- */
@media (max-height: 600px) and (orientation: landscape) {
  body {
    padding: 10px;
    align-items: flex-start;
  }

  .login-card {
    max-width: 90%;
    padding: 1.5rem;
    margin-top: 20px;
    margin-bottom: 20px;
  }

  .login-header {
    margin-bottom: 1.5rem;
  }

  .login-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 0.75rem;
  }

  .login-icon svg {
    width: 22px;
    height: 22px;
  }
}

/* --- Dark Mode Support (پیشرفته) --- */
@media (prefers-color-scheme: light) {
  :root {
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
  }

  .login-card {
    border: 1px solid #e2e8f0;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.1);
  }

  .login-card::before {
    background: radial-gradient(
      circle,
      rgba(255, 140, 66, 0.08) 0%,
      rgba(255, 140, 66, 0.03) 25%,
      transparent 70%
    );
  }
}

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

  .login-card {
    animation: none;
  }

  .login-icon {
    animation: none;
  }
}

/* --- Focus Visible برای دسترسی بهتر --- */
.btn-primary:focus-visible,
.input-group input:focus-visible,
.back-link:focus-visible {
  outline: 3px solid var(--primary-orange);
  outline-offset: 2px;
}

/* --- پشتیبانی از مرورگرهای قدیمی --- */
@supports not (backdrop-filter: blur(10px)) {
  .login-card {
    backdrop-filter: none;
  }
}