/* =====================================================
   Focus Blur - Main Stylesheet
   Design System & Global Styles
   ===================================================== */

/* CSS Custom Properties - Design Tokens */
:root {
    /* Color Palette */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-primary-glow: rgba(99, 102, 241, 0.4);

    --color-success: #10b981;
    --color-success-light: #34d399;
    --color-success-dark: #059669;

    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    /* Dark Theme Colors */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252542;
    --bg-elevated: #2d2d4a;
    --bg-hover: #3d3d5c;

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Border Colors */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(255, 255, 255, 0.2);

    /* Glassmorphism */
    --glass-bg: rgba(26, 26, 46, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

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

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* 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-glow: 0 0 20px var(--color-primary-glow);

    /* Z-Index Scale */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: var(--radius-full);
}

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

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* Header Styles */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-xl);
    background: linear-gradient(180deg, rgba(26, 26, 46, 0.95) 0%, rgba(26, 26, 46, 0.85) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    z-index: var(--z-sticky);
    position: relative;
}

/* Subtle bottom glow */
.app-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(99, 102, 241, 0.3) 50%,
            transparent 100%);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-primary);
    filter: drop-shadow(0 0 12px var(--color-primary-glow));
    transition: all var(--transition-normal);
}

.logo:hover .logo-icon {
    transform: rotate(90deg) scale(1.1);
    filter: drop-shadow(0 0 20px var(--color-primary-glow));
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, var(--color-primary-light) 50%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Preview Toggle Switch */
.preview-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.preview-toggle input {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 44px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.preview-toggle input:checked+.toggle-slider {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.preview-toggle input:checked+.toggle-slider::before {
    transform: translateX(20px);
    background: white;
}

.preview-toggle input:disabled+.toggle-slider {
    opacity: 0.4;
    cursor: not-allowed;
}

.preview-toggle:has(input:disabled) {
    cursor: not-allowed;
}

.toggle-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.preview-toggle input:checked~.toggle-label {
    color: var(--color-primary-light);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow:
        0 2px 10px rgba(99, 102, 241, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow:
        0 6px 20px rgba(99, 102, 241, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow:
        0 2px 8px rgba(99, 102, 241, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    color: white;
    box-shadow:
        0 2px 10px rgba(16, 185, 129, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow:
        0 6px 20px rgba(16, 185, 129, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-outline:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

/* Main Content Area */
.app-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

/* Status Bar */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px var(--spacing-xl);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(15, 15, 26, 0.95) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.75rem;
    color: var(--text-muted);
    position: relative;
}

.status-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(99, 102, 241, 0.2) 50%,
            transparent 100%);
}

.status-left,
.status-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
    .app-header {
        padding: var(--spacing-md);
    }

    .logo-text {
        display: none;
    }
}

@media (max-width: 768px) {
    .header-actions .btn span {
        display: none;
    }

    .btn {
        padding: var(--spacing-sm);
    }
}

/* Animation Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 20px var(--color-primary-glow);
    }

    50% {
        box-shadow: 0 0 40px var(--color-primary-glow);
    }
}