/* ============================================================================
   OVIT.CLOUD - Futuristic Premium Cloud Hosting Theme
   WHMCS 9.0+ | PHP 8.3+ | Modern ES6+ JavaScript
   ============================================================================ */

/* ============================================================================
   DESIGN TOKENS & CSS VARIABLES
   ============================================================================ */

:root {
    /* =====================
       Brand Colors - Futuristic Cyan/Neon
       ===================== */
    --brand-primary: #00d4ff;           /* Cyan Neon */
    --brand-secondary: #00f0ff;         /* Bright Cyan */
    --brand-tertiary: #0099cc;          /* Deep Cyan */
    --brand-accent: #ff006e;            /* Hot Pink */
    
    /* =====================
       Status Colors
       ===================== */
    --color-success: #00ff88;           /* Neon Green */
    --color-warning: #ffaa00;           /* Neon Orange */
    --color-error: #ff0055;             /* Neon Red */
    --color-info: #00d4ff;              /* Neon Cyan */
    
    /* =====================
       Grayscale & Backgrounds
       ===================== */
    --bg-dark-0: #0a0e27;               /* Deep Dark */
    --bg-dark-1: #1a1f3a;               /* Dark Blue-Black */
    --bg-dark-2: #252d4d;               /* Darker Blue */
    --bg-dark-3: #333d5f;               /* Dark Gray */
    --bg-dark-hover: #1f2847;           /* Hover state */
    
    /* =====================
       Text Colors
       ===================== */
    --text-primary: #e0e8ff;            /* Light Text */
    --text-secondary: #a8b4d8;          /* Secondary Text */
    --text-tertiary: #8a96c6;           /* Tertiary Text */
    --text-muted: #6b7a9f;              /* Muted Text */
    
    /* =====================
       Border & Divider
       ===================== */
    --border-color: #2a3555;            /* Standard border */
    --border-light: #1f2847;            /* Light border */
    --border-dark: #3d4a6f;             /* Dark border */
    
    /* =====================
       Shadows - Neon Glow
       ===================== */
    --shadow-sm: 0 1px 3px rgba(0, 212, 255, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 212, 255, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 212, 255, 0.1);
    --shadow-xl: 0 8px 24px rgba(0, 212, 255, 0.15);
    --glow-sm: 0 0 8px rgba(0, 212, 255, 0.3);
    --glow-md: 0 0 16px rgba(0, 212, 255, 0.4);
    --glow-lg: 0 0 32px rgba(0, 212, 255, 0.5);
    --glow-hot: 0 0 20px rgba(255, 0, 110, 0.6);
    
    /* =====================
       Typography
       ===================== */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'Fira Code', 'Monaco', 'Courier New', monospace;
    --font-heading: 'Inter', 'Helvetica Neue', sans-serif;
    
    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    
    /* =====================
       Spacing Scale
       ===================== */
    --space-00: 0.25rem;
    --space-0: 0.5rem;
    --space-1: 0.75rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 2.5rem;
    --space-6: 3rem;
    --space-7: 4rem;
    --space-8: 5rem;
    --space-9: 6rem;
    --space-10: 7rem;
    
    /* =====================
       Border Radius
       ===================== */
    --radius-xs: 0.25rem;
    --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);
    
    /* =====================
       Z-Index Scale
       ===================== */
    --z-hide: -1;
    --z-base: 0;
    --z-dropdown: 1000;
    --z-fixed: 1020;
    --z-modal-bg: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark mode by default (futuristic theme) */
@media (prefers-color-scheme: light) {
    :root {
        --bg-dark-0: #f8f9fc;
        --bg-dark-1: #ffffff;
        --bg-dark-2: #f0f4fc;
        --bg-dark-3: #e5ecf7;
        --bg-dark-hover: #d5e1ef;
        --text-primary: #0f1419;
        --text-secondary: #3a4059;
        --text-tertiary: #5a6b80;
        --text-muted: #8894a8;
    }
}

/* ============================================================================
   GLOBAL RESET & BASE STYLES
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-dark-0);
    overflow-x: hidden;
}

/* Selection */
::selection {
    background-color: var(--brand-primary);
    color: var(--bg-dark-0);
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark-1);
}

::-webkit-scrollbar-thumb {
    background: var(--brand-primary);
    border-radius: var(--radius-md);
    opacity: 0.5;
}

::-webkit-scrollbar-thumb:hover {
    opacity: 0.8;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

h1 { font-size: var(--fs-5xl); }
h2 { font-size: var(--fs-4xl); }
h3 { font-size: var(--fs-3xl); }
h4 { font-size: var(--fs-2xl); }
h5 { font-size: var(--fs-xl); }
h6 { font-size: var(--fs-lg); }

p {
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
    line-height: 1.8;
}

a {
    color: var(--brand-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a:hover {
    color: var(--brand-secondary);
}

code {
    font-family: var(--font-mono);
    background-color: var(--bg-dark-2);
    color: var(--brand-secondary);
    padding: 0.25em 0.5em;
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
}

pre {
    background-color: var(--bg-dark-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    overflow-x: auto;
    margin-bottom: var(--space-3);
}

/* ============================================================================
   LAYOUT CONTAINERS
   ============================================================================ */

.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 var(--space-4);
}

.container-lg {
    max-width: 1400px;
}

.container-sm {
    max-width: 800px;
}

/* Grid System */
.grid {
    display: grid;
    grid-auto-flow: dense;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { align-items: center; justify-content: center; }
.flex-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    font-size: var(--fs-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.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 var(--transition-base), height var(--transition-base);
}

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

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-tertiary));
    color: var(--bg-dark-0);
    border-color: var(--brand-primary);
    box-shadow: var(--glow-md);
}

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

/* Secondary Button */
.btn-secondary {
    background: var(--bg-dark-2);
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}

.btn-secondary:hover {
    background: var(--bg-dark-3);
    border-color: var(--brand-secondary);
    color: var(--brand-secondary);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-light);
}

.btn-ghost:hover {
    background: var(--bg-dark-2);
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

/* Success Button */
.btn-success {
    background: var(--color-success);
    color: var(--bg-dark-0);
    border-color: var(--color-success);
}

.btn-success:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* Outlined Button */
.btn-outline {
    background: transparent;
    border: 2px solid var(--brand-primary);
    color: var(--brand-primary);
}

.btn-outline:hover {
    background: var(--brand-primary);
    color: var(--bg-dark-0);
}

/* Size Variants */
.btn-sm { padding: var(--space-1) var(--space-2); font-size: var(--fs-sm); }
.btn-lg { padding: var(--space-3) var(--space-4); font-size: var(--fs-lg); }
.btn-xl { padding: var(--space-4) var(--space-6); font-size: var(--fs-xl); }

/* Full Width */
.btn-block {
    width: 100%;
    display: flex;
}

/* Disabled State */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
    margin-bottom: var(--space-3);
}

label {
    display: block;
    margin-bottom: var(--space-1);
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--fs-sm);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="date"],
textarea,
select {
    width: 100%;
    padding: var(--space-2);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-dark-1);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--fs-base);
    transition: all var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--brand-primary);
    background-color: var(--bg-dark-2);
    box-shadow: var(--glow-sm);
}

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

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

select {
    cursor: pointer;
    padding-right: var(--space-4);
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="%2300d9ff"><path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd" /></svg>');
    background-repeat: no-repeat;
    background-position: right var(--space-2) center;
    background-size: 1.2em;
    appearance: none;
}

/* Checkbox & Radio */
input[type="checkbox"],
input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--brand-primary);
    cursor: pointer;
}

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
    background: var(--bg-dark-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--brand-primary);
    box-shadow: var(--shadow-lg);
}

.card-header {
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    margin-bottom: var(--space-3);
}

.card-footer {
    padding-top: var(--space-3);
    border-top: 1px solid var(--border-color);
}

/* ============================================================================
   ALERTS
   ============================================================================ */

.alert {
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}

.alert-success {
    background: rgba(6, 255, 165, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.alert-warning {
    background: rgba(255, 214, 10, 0.1);
    border: 1px solid var(--color-warning);
    color: var(--color-warning);
}

.alert-info {
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid var(--color-info);
    color: var(--color-info);
}

/* ============================================================================
   TABLES
   ============================================================================ */

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-4);
}

.table th {
    background: var(--bg-dark-2);
    color: var(--text-primary);
    padding: var(--space-2);
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border-light);
}

.table td {
    padding: var(--space-2);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.table tbody tr:hover {
    background-color: var(--bg-dark-3);
}

/* ============================================================================
   BADGES & TAGS
   ============================================================================ */

.badge {
    display: inline-block;
    padding: 0.25em 0.75em;
    border-radius: var(--radius-full);
    font-size: var(--fs-xs);
    font-weight: 600;
}

.badge-primary {
    background: var(--brand-primary);
    color: var(--bg-dark-0);
}

.badge-secondary {
    background: var(--brand-secondary);
    color: white;
}

.badge-success {
    background: var(--color-success);
    color: var(--bg-dark-0);
}

.badge-error {
    background: var(--color-error);
    color: white;
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }

.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-2);
    }
    
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: var(--fs-3xl); }
    h2 { font-size: var(--fs-2xl); }
    h3 { font-size: var(--fs-xl); }
    
    .btn-lg { padding: var(--space-2) var(--space-3); }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-2);
    }
    
    h1 { font-size: var(--fs-2xl); }
    h2 { font-size: var(--fs-xl); }
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes glow {
    0%, 100% {
        text-shadow: 0 0 10px var(--brand-primary);
    }
    50% {
        text-shadow: 0 0 20px var(--brand-primary);
    }
}

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

.animate-slide-in-left {
    animation: slideInLeft var(--transition-base);
}

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