/* ========================================
   GRACE MEDIA PHOENIX - UNIFIED DESIGN SYSTEM
   ======================================== */

/* ========================================
   CSS VARIABLES / DESIGN TOKENS
   ======================================== */
:root {
  /* Color Palette */
  --color-primary: #007FFF;
  --color-primary-hover: #005fcc;
  --color-primary-light: #4da6ff;

  --color-secondary: #5c5da2;
  --color-secondary-hover: #7879b8;

  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #ff6b6b;
  --color-info: #17a2b8;

  /* Background Colors */
  --color-bg-primary: #181924;
  --color-bg-secondary: #1d1f2f;
  --color-bg-elevated: #272a49;
  --color-bg-elevated-hover: #2f3358;

  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #b0b3c5;
  --color-text-muted: #7e8299;
  --color-text-link: #9ecbff;

  /* Border Colors */
  --color-border-primary: #3a3f5c;
  --color-border-secondary: #2a2e45;

  /* Spacing Scale */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Layout */
  --navbar-height: 70px;
  --sidebar-width: 280px;
  --sidebar-width-collapsed: 60px;

  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ========================================
   BASE STYLES
   ======================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-muted {
  color: var(--color-text-muted) !important;
}

.text-secondary {
  color: var(--color-text-secondary) !important;
}

.fw-medium {
  font-weight: var(--font-weight-medium) !important;
}

.fw-semibold {
  font-weight: var(--font-weight-semibold) !important;
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-primary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-secondary);
}

/* ========================================
   FORM ELEMENTS
   ======================================== */
.form-control,
.form-select {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  color: var(--color-text-primary);
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-control:focus,
.form-select:focus {
  background-color: var(--color-bg-elevated);
  border-color: var(--color-primary);
  color: var(--color-text-primary);
  box-shadow: 0 0 0 3px rgba(0, 127, 255, 0.1);
  outline: none;
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-label {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

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

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-text-primary);
}

.btn-secondary {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-primary);
}

.btn-secondary:hover {
  background-color: var(--color-bg-elevated-hover);
  color: var(--color-text-primary);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-border-primary);
  color: var(--color-text-primary);
}

.btn-outline:hover {
  background-color: var(--color-bg-elevated);
  border-color: var(--color-primary);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-lg);
}

/* ========================================
   CARDS & PANELS
   ======================================== */
.card {
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-secondary);
  transition: all var(--transition-base);
}

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

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border-secondary);
  margin: calc(-1 * var(--space-xl)) calc(-1 * var(--space-xl)) var(--space-lg);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border-secondary);
  margin: var(--space-lg) calc(-1 * var(--space-xl)) calc(-1 * var(--space-xl));
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  border-left: 4px solid;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  border-color: var(--color-success);
  color: #5eff88;
}

.alert-warning {
  background-color: rgba(255, 193, 7, 0.1);
  border-color: var(--color-warning);
  color: #ffd454;
}

.alert-danger {
  background-color: rgba(255, 107, 107, 0.1);
  border-color: var(--color-danger);
  color: #ff9999;
}

.alert-info {
  background-color: rgba(23, 162, 184, 0.1);
  border-color: var(--color-info);
  color: #5dd4ed;
}

/* ========================================
   LOADING STATES
   ======================================== */
.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-bg-elevated);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 6px;
}

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

.loading-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-md);
}

/* ========================================
   TRANSITIONS & ANIMATIONS
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-base);
}

.slide-in-right {
  animation: slideInRight var(--transition-base);
}

/* ========================================
   RESPONSIVE UTILITIES
   ======================================== */
@media (max-width: 768px) {
  :root {
    --navbar-height: 60px;
    --sidebar-width: 100%;
  }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}