/**
 * AnglaisParis.com Design System
 * A unified, elegant dark theme for all personal web apps
 *
 * Usage:
 * 1. Include this CSS file in your app
 * 2. Optionally override CSS variables to customize colors per app
 * 3. Use the provided utility classes and component styles
 */

/* ============================================
   CSS VARIABLES - Customize per app
   ============================================ */

:root {
    /* Theme Colors - Override these per app */
    --color-primary: #667eea;
    --color-primary-hover: #5568d3;
    --color-primary-light: rgba(102, 126, 234, 0.1);

    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-hover: #059669;
    --color-success-light: rgba(16, 185, 129, 0.1);

    --color-error: #ef4444;
    --color-error-hover: #dc2626;
    --color-error-light: rgba(239, 68, 68, 0.1);

    --color-warning: #f59e0b;
    --color-warning-hover: #d97706;
    --color-warning-light: rgba(245, 158, 11, 0.1);

    --color-info: #3b82f6;
    --color-info-hover: #2563eb;
    --color-info-light: rgba(59, 130, 246, 0.1);

    /* Neutral Colors - Base dark theme */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #2a2a2a;

    --color-border: #333333;
    --color-border-light: #404040;
    --color-border-dark: #1a1a1a;

    --color-text-primary: #ffffff;
    --color-text-secondary: #cccccc;
    --color-text-tertiary: #888888;
    --color-text-disabled: #555555;

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

    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;

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

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing - 8px base unit system */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 40px;
    --space-6: 48px;
    --space-8: 64px;
    --space-10: 80px;

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

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);

    /* Animation */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-toast: 1060;
    --z-tooltip: 1070;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
}

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-2);
    color: var(--color-text-secondary);
}

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

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

code {
    font-family: var(--font-family-mono);
    font-size: 0.9em;
    padding: 2px 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: 12px var(--space-2);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:not(:disabled):active {
    transform: scale(0.98);
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Button variants */
.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

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

.btn-success:hover:not(:disabled) {
    background: var(--color-success-hover);
}

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

.btn-error:hover:not(:disabled) {
    background: var(--color-error-hover);
}

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

.btn-warning:hover:not(:disabled) {
    background: var(--color-warning-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--color-border);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

/* Button sizes */
.btn-sm {
    padding: 8px 12px;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 16px var(--space-3);
    font-size: var(--font-size-lg);
}

.btn-block {
    width: 100%;
}

/* ============================================
   INPUTS & FORMS
   ============================================ */

.input,
.textarea,
.select {
    width: 100%;
    padding: 12px var(--space-2);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.input:focus,
.textarea:focus,
.select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.input:disabled,
.textarea:disabled,
.select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input::placeholder,
.textarea::placeholder {
    color: var(--color-text-tertiary);
}

.textarea {
    min-height: 100px;
    resize: vertical;
}

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

.form-label {
    display: block;
    margin-bottom: var(--space-1);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.form-error {
    margin-top: var(--space-1);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

.form-help {
    margin-top: var(--space-1);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

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

.card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-3);
}

.card-header {
    padding-bottom: var(--space-2);
    margin-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

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

.card-footer {
    padding-top: var(--space-2);
    margin-top: var(--space-2);
    border-top: 1px solid var(--color-border);
}

/* ============================================
   MODAL
   ============================================ */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    opacity: 0;
    animation: fadeIn var(--transition-base) forwards;
}

.modal-backdrop.closing {
    animation: fadeOut var(--transition-base) forwards;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    animation: scaleIn var(--transition-base) forwards;
}

.modal-backdrop.closing .modal {
    animation: scaleOut var(--transition-base) forwards;
}

.modal-header {
    padding: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--space-3);
    color: var(--color-text-secondary);
}

.modal-footer {
    padding: var(--space-3);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--space-2);
    justify-content: flex-end;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
    position: fixed;
    top: var(--space-2);
    right: var(--space-2);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
}

.toast {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2);
    min-width: 300px;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    pointer-events: all;
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    animation: slideInRight var(--transition-base) forwards;
}

.toast.closing {
    animation: slideOutRight var(--transition-base) forwards;
}

.toast-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

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

.toast-close {
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.toast-close:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

/* Toast variants */
.toast-success {
    border-left: 4px solid var(--color-success);
}

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

.toast-error {
    border-left: 4px solid var(--color-error);
}

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

.toast-warning {
    border-left: 4px solid var(--color-warning);
}

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

.toast-info {
    border-left: 4px solid var(--color-info);
}

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

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px var(--space-1);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

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

.badge-warning {
    background: var(--color-warning-light);
    color: var(--color-warning);
}

.badge-info {
    background: var(--color-info-light);
    color: var(--color-info);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Spacing */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }

/* Text alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Text colors */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

/* Font weights */
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox utilities */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes scaleOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.95);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutRight {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}


/* ============================================
   PULSE ANIMATION & ENHANCED MODALS
   ============================================ */

/* Pulsing border animation for temporary/paused states */
@keyframes pulseBorder {
    0%, 100% {
        box-shadow: 0 0 0 0 var(--color-primary),
                    0 0 30px 0 rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.4),
                    0 0 40px 0 rgba(102, 126, 234, 0.5);
    }
}

/* Floating effect for elevated modals */
.modal-floating {
    animation: pulseBorder 2s ease-in-out infinite,
               modalFloat 3s ease-in-out infinite;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6),
                0 0 0 1px rgba(102, 126, 234, 0.2);
}

@keyframes modalFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-5px) scale(1);
    }
}

/* Photo actions modal specific styles */
.photo-modal {
    position: relative;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
}

.photo-modal-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-2);
    padding: var(--space-3);
}

.photo-modal-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.photo-modal-action-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-primary);
    color: var(--color-text-primary);
    transform: translateY(-2px);
}

.photo-modal-action-btn .icon {
    font-size: var(--font-size-3xl);
}

/* Auto-close countdown */
.modal-countdown {
    position: absolute;
    bottom: var(--space-2);
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    opacity: 0.6;
}

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

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 28px;
        --font-size-3xl: 24px;
        --font-size-2xl: 20px;
    }

    .modal {
        max-width: 100%;
        margin: var(--space-2);
    }

    .toast-container {
        left: var(--space-2);
        right: var(--space-2);
    }

    .toast {
        min-width: auto;
    }
}