/* =====================================================
   KANTEMBA - APPLE STYLE CSS
   Clean, minimal, modern design language
   Inspired by Apple's design philosophy
   ===================================================== */

/* =============================================
   CSS VARIABLES
   ============================================= */

:root {
    /* Colors */
    --color-primary: #22c55e;
    --color-primary-hover: #2bde6c;
    --color-primary-dark: #16a34a;
    --color-bg: #08111f;
    --color-bg-card: #111827;
    --color-bg-card-hover: #1e293b;
    --color-bg-input: #1e293b;
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-text-dim: #64748b;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-light: rgba(255, 255, 255, 0.04);
    --color-border-input: rgba(255, 255, 255, 0.08);
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    --color-purple: #8b5cf6;
    --color-pink: #ec4899;
    --color-orange: #f97316;
    --color-teal: #14b8a6;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-size-xs: 0.65rem;
    --font-size-sm: 0.75rem;
    --font-size-base: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;
    --spacing-4xl: 48px;
    --spacing-5xl: 64px;
    --spacing-6xl: 80px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 30px rgba(34, 197, 94, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-blur: 20px;
    --glass-saturate: 180%;
}

/* =============================================
   RESET & BASE
   ============================================= */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

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-md); }

p {
    color: var(--color-text-muted);
    line-height: 1.7;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-base);
}

a:hover {
    color: var(--color-primary-hover);
}

/* =============================================
   CONTAINER
   ============================================= */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-2xl);
}

@media (max-width: 640px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* =============================================
   BUTTONS - APPLE STYLE
   ============================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    letter-spacing: -0.01em;
    min-height: 44px;
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: var(--color-primary);
    color: #04120a;
}

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

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

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

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

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-3xl);
    font-size: var(--font-size-lg);
    min-height: 52px;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
    justify-content: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* =============================================
   CARDS - APPLE STYLE
   ============================================= */

.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    padding: var(--spacing-2xl);
    transition: var(--transition-base);
}

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

.card-glass {
    background: var(--glass-bg);
    backdrop-filter: saturate(var(--glass-saturate)) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(var(--glass-saturate)) blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

/* =============================================
   INPUTS - APPLE STYLE
   ============================================= */

.input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border-input);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    outline: none;
    min-height: 44px;
}

.input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

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

.input-error {
    border-color: var(--color-danger);
}

.input-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-success {
    border-color: var(--color-success);
}

/* =============================================
   SELECT - APPLE STYLE
   ============================================= */

.select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border-input);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    min-height: 44px;
    cursor: pointer;
}

.select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.select option {
    background: var(--color-bg);
    color: var(--color-text);
}

/* =============================================
   BADGES - APPLE STYLE
   ============================================= */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.badge-info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-info);
}

.badge-purple {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-purple);
}

.badge-pink {
    background: rgba(236, 72, 153, 0.15);
    color: var(--color-pink);
}

.badge-orange {
    background: rgba(249, 115, 22, 0.15);
    color: var(--color-orange);
}

/* =============================================
   ALERTS - APPLE STYLE
   ============================================= */

.alert {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

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

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

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-info);
    color: var(--color-info);
}

/* =============================================
   GRID LAYOUTS
   ============================================= */

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
}

/* =============================================
   SECTION HEADERS
   ============================================= */

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-title i {
    color: var(--color-primary);
    margin-right: var(--spacing-sm);
}

.section-subtitle {
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
    margin-top: var(--spacing-xs);
}

.section-link {
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-base);
}

.section-link:hover {
    gap: var(--spacing-md);
}

/* =============================================
   TOAST NOTIFICATIONS - APPLE STYLE
   ============================================= */

.toast-apple {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-bg-card);
    backdrop-filter: saturate(var(--glass-saturate)) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(var(--glass-saturate)) blur(var(--glass-blur));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 1000;
    min-width: 280px;
    max-width: 420px;
    animation: slideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: bottom;
}

.toast-apple.success {
    border-left: 3px solid var(--color-success);
}

.toast-apple.error {
    border-left: 3px solid var(--color-danger);
}

.toast-apple .toast-icon {
    font-size: var(--font-size-xl);
}

.toast-apple .toast-icon.success {
    color: var(--color-success);
}

.toast-apple .toast-icon.error {
    color: var(--color-danger);
}

.toast-apple .toast-content {
    flex: 1;
}

.toast-apple .toast-title {
    font-weight: 600;
    font-size: var(--font-size-base);
}

.toast-apple .toast-message {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.toast-apple .toast-close {
    background: none;
    border: none;
    color: var(--color-text-dim);
    cursor: pointer;
    font-size: var(--font-size-lg);
    padding: var(--spacing-xs);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.toast-apple .toast-close:hover {
    background: rgba(255, 255, 255, 0.05);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* =============================================
   PAGINATION - APPLE STYLE
   ============================================= */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.pagination .page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-base);
    font-weight: 500;
}

.pagination .page-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination .page-link.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #04120a;
}

.pagination .page-link:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* =============================================
   EMPTY STATE - APPLE STYLE
   ============================================= */

.empty-state {
    text-align: center;
    padding: var(--spacing-5xl) var(--spacing-2xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.empty-state .empty-icon {
    font-size: 4rem;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-lg);
}

.empty-state h3 {
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

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

.glass {
    background: var(--glass-bg);
    backdrop-filter: saturate(var(--glass-saturate)) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(var(--glass-saturate)) blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

.glass-light {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: saturate(150%) blur(12px);
    -webkit-backdrop-filter: saturate(150%) blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

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

.hide-desktop {
    display: none;
}

.hide-mobile {
    display: block;
}

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

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-col { flex-direction: column; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* =============================================
   RESPONSIVE BREAKPOINTS
   ============================================= */

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

@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr; }
    
    .section-title { font-size: var(--font-size-2xl); }
    .hide-desktop { display: block; }
    .hide-mobile { display: none; }
    
    .toast-apple {
        left: 20px;
        right: 20px;
        bottom: 20px;
        min-width: auto;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* =============================================
   DARK MODE SCROLLBAR
   ============================================= */

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-text-dim);
    border-radius: var(--radius-full);
}

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

/* =============================================
   SELECTION
   ============================================= */

::selection {
    background: var(--color-primary);
    color: #04120a;
}

/* =============================================
   APPLE STYLE LOADING SPINNER
   ============================================= */

.spinner-apple {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border-input);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* =============================================
   APPLE STYLE DIVIDER
   ============================================= */

.divider {
    width: 100%;
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-2xl) 0;
}

.divider-light {
    background: var(--color-border-light);
}

/* =============================================
   APPLE STYLE TOOLTIP
   ============================================= */

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    opacity: 0;
    width: 200px;
    background: var(--color-bg-card);
    color: var(--color-text);
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    position: absolute;
    z-index: 100;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) scale(0.95);
    transition: var(--transition-base);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-md);
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

.tooltip .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--color-border) transparent transparent transparent;
}