/* ==========================================================================
   AAROHAN '26 - BASE STYLES & DESIGN TOKENS
   Clean, modern, uncluttered, spacious foundation
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-main: #030d1d;
  --bg-card: rgba(8, 28, 64, 0.75);
  --bg-card-hover: rgba(12, 38, 85, 0.85);
  --bg-input: rgba(3, 16, 40, 0.8);
  --bg-elevated: #0a2552;

  --text-main: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-pure: #FFFFFF;

  --accent-orange: #FF8C00;
  --accent-orange-light: #FFA424;
  --accent-sky: #38BDF8;
  --accent-sky-light: #84CAFF;

  --border-subtle: rgba(132, 202, 255, 0.12);
  --border-medium: rgba(132, 202, 255, 0.25);
  --border-focus: #FFA424;

  --color-success: #10B981;
  --color-danger: #EF4444;
  --color-warning: #F59E0B;

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Border Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows & Transitions */
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-pop: 0 15px 40px rgba(0, 0, 0, 0.45);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-main);
  background-image: radial-gradient(circle at 50% 10%, #0d2752 0%, #030d1d 65%);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-pure);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-secondary);
}

a {
  color: var(--accent-sky-light);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-orange-light);
}

/* Common Layout Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* Minimal Top Navigation */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(3, 13, 29, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.brand-info {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-pure);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-tag {
  background: var(--accent-orange);
  color: #030d1d;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Clean Form Elements */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.45rem;
}

.form-label .req {
  color: var(--accent-orange);
  margin-left: 0.25rem;
}

.input-field {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  color: var(--text-pure);
  background: var(--bg-input);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  outline: none;
  transition: var(--transition);
}

.input-field:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(255, 164, 36, 0.15);
}

.input-field::placeholder {
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-light) 100%);
  color: #020b18;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(255, 140, 0, 0.25);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #e67e00 0%, #ff970a 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(255, 140, 0, 0.35);
}

.btn-secondary {
  background: rgba(132, 202, 255, 0.08);
  color: var(--accent-sky-light);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(132, 202, 255, 0.15);
  border-color: var(--accent-sky);
  color: var(--text-pure);
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
}

/* Alert Boxes */
.alert-box {
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #FCA5A5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #6EE7B7;
}

.alert-info {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #BAE6FD;
}