/* ===================================
   VEXCRYPT CORE DESIGN SYSTEM
   Post-Quantum Cryptography Platform
   Professional Enterprise Interface
   =================================== */

:root {
    /* === QUANTUM COLOR PALETTE === */
    --quantum-primary: #6366f1;
    --quantum-primary-light: #818cf8;
    --quantum-primary-dark: #4f46e5;
    --quantum-primary-glow: rgba(99, 102, 241, 0.5);
    
    --quantum-secondary: #8b5cf6;
    --quantum-secondary-light: #a78bfa;
    --quantum-secondary-dark: #7c3aed;
    
    --quantum-accent: #06b6d4;
    --quantum-accent-light: #22d3ee;
    --quantum-accent-dark: #0891b2;
    
    --quantum-success: #10b981;
    --quantum-success-light: #34d399;
    --quantum-success-glow: rgba(16, 185, 129, 0.3);
    
    --quantum-warning: #f59e0b;
    --quantum-warning-light: #fbbf24;
    
    --quantum-danger: #ef4444;
    --quantum-danger-light: #f87171;
    --quantum-danger-glow: rgba(239, 68, 68, 0.3);
    
    --quantum-info: #3b82f6;
    --quantum-info-light: #60a5fa;
    
    /* === NEURAL BACKGROUND === */
    --neural-bg-primary: #0a0a0f;
    --neural-bg-secondary: #0f0f14;
    --neural-bg-tertiary: #14141a;
    
    --neural-surface: rgba(30, 30, 40, 0.5);
    --neural-surface-elevated: rgba(40, 40, 50, 0.6);
    --neural-surface-hover: rgba(50, 50, 60, 0.7);
    
    /* === TYPOGRAPHY === */
    --text-primary: #ffffff;
    --text-secondary: #e5e7eb;
    --text-tertiary: #9ca3af;
    --text-muted: #6b7280;
    
    /* === BORDERS & DIVIDERS === */
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.15);
    --border-quantum: rgba(99, 102, 241, 0.3);
    
    /* === SHADOWS === */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
    --shadow-quantum: 0 8px 32px var(--quantum-primary-glow);
    --shadow-success: 0 8px 32px var(--quantum-success-glow);
    --shadow-danger: 0 8px 32px var(--quantum-danger-glow);
    
    /* === SPACING SYSTEM === */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* === BORDER RADIUS === */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* === TRANSITIONS === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* === Z-INDEX SCALE === */
    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1100;
    --z-fixed: 1200;
    --z-modal-backdrop: 1300;
    --z-modal: 1400;
    --z-popover: 1500;
    --z-tooltip: 1600;
}

/* === GLOBAL RESET === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* === BASE TYPOGRAPHY === */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--neural-bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === QUANTUM BACKGROUND === */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* === GRID OVERLAY === */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* === HEADINGS === */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

/* === QUANTUM CARD SYSTEM === */
.quantum-card {
    background: var(--neural-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.quantum-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(99, 102, 241, 0.05) 0%, 
        transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.quantum-card:hover {
    border-color: var(--border-quantum);
    transform: translateY(-2px);
    box-shadow: var(--shadow-quantum);
}

.quantum-card:hover::before {
    opacity: 1;
}

.quantum-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
}

.quantum-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.quantum-card-body {
    color: var(--text-secondary);
}

/* === STAT CARDS === */
.stat-card {
    background: var(--neural-surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--quantum-primary), var(--quantum-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-spring);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-quantum);
    box-shadow: var(--shadow-quantum);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: var(--space-xs);
}

.stat-change {
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.stat-change.positive {
    color: var(--quantum-success);
}

.stat-change.negative {
    color: var(--quantum-danger);
}

/* === STATS GRID (responsive cards row) === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    align-items: start;
}

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    min-height: 88px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn:hover::before {
    opacity: 1;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--quantum-primary), var(--quantum-primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    box-shadow: var(--shadow-quantum);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--neural-surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    border-color: var(--border-quantum);
    background: var(--neural-surface-hover);
}

.btn-success {
    background: linear-gradient(135deg, var(--quantum-success), var(--quantum-success));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    box-shadow: var(--shadow-success);
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--quantum-danger), #dc2626);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-danger:hover {
    box-shadow: var(--shadow-danger);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

.btn-ghost:hover {
    background: var(--neural-surface);
    border-color: var(--border-quantum);
    color: var(--quantum-primary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

.btn-icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border-radius: var(--radius-md);
}

/* === BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.15);
    color: var(--quantum-primary-light);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--quantum-success-light);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--quantum-warning-light);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--quantum-danger-light);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--quantum-info-light);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

/* === QUANTUM TABLE === */
.quantum-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--neural-surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.quantum-table thead {
    background: var(--neural-surface-elevated);
}

.quantum-table th {
    padding: var(--space-lg);
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 1px solid var(--border-default);
}

.quantum-table td {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.quantum-table tbody tr {
    transition: background-color var(--transition-fast);
}

.quantum-table tbody tr:hover {
    background: var(--neural-surface-hover);
}

.quantum-table tbody tr:last-child td {
    border-bottom: none;
}

/* === FORMS === */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background: var(--neural-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--quantum-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* === GRID SYSTEM === */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1200px) {
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
}

/* === FLEX UTILITIES === */
.flex {
    display: flex;
}

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

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

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

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* === SPACING UTILITIES === */
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

/* === TEXT UTILITIES === */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-muted { color: var(--text-muted); }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

/* === QUANTUM ANIMATIONS === */
@keyframes quantum-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

@keyframes quantum-glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(99, 102, 241, 0.6);
    }
}

@keyframes slide-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-pulse {
    animation: quantum-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-glow {
    animation: quantum-glow 3s ease-in-out infinite;
}

.animate-slide-in {
    animation: slide-in 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

::-webkit-scrollbar-track {
    background: var(--neural-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--neural-surface-elevated);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neural-surface-hover);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .quantum-card {
        padding: var(--space-lg);
    }
    
    .btn-lg {
        padding: 0.875rem 1.75rem;
    }
}

/* === TOASTS === */
.global-toasts {
    position: fixed;
    right: 18px;
    bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 99999;
}
.toast {
    background: rgba(17,17,20,0.85);
    color: var(--text-secondary);
    padding: 10px 14px;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    transition: opacity 0.4s ease, transform 0.25s ease;
    opacity: 1;
}
.toast.success { border-left: 4px solid var(--quantum-success); }
.toast.info { border-left: 4px solid var(--quantum-primary); }
.toast.warning { border-left: 4px solid var(--quantum-warning); }
.toast.danger { border-left: 4px solid var(--quantum-danger); }