/**
 * ChatProjects Theme System
 *
 * Brand colors and design tokens matching chatprojects.com
 * Supports light/dark mode via html.dark class
 */

/* ============================================
   GOOGLE FONTS
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES - LIGHT MODE (DEFAULT)
   ============================================ */
:root {
    /* Brand Colors - matching chatprojects.com */
    --cp-primary: #060097;           /* Deep blue - links, accents, primary actions */
    --cp-primary-hover: #0400c0;     /* Primary hover state */
    --cp-secondary: #c10fff;         /* Bright purple - hover states, interactive */
    --cp-secondary-hover: #a000e0;   /* Secondary hover */
    --cp-accent: #ffcd57;            /* Yellow - CTAs, highlights */
    --cp-accent-hover: #ffc233;      /* Accent hover */

    /* Semantic Colors */
    --cp-success: #10b981;           /* Green - success states */
    --cp-success-hover: #059669;
    --cp-warning: #f59e0b;           /* Amber - warnings */
    --cp-warning-hover: #d97706;
    --cp-danger: #ef4444;            /* Red - errors, destructive */
    --cp-danger-hover: #dc2626;
    --cp-info: #3b82f6;              /* Blue - info */
    --cp-info-hover: #2563eb;

    /* Text Colors - Light Mode */
    --cp-text-primary: #1e293b;      /* Primary text */
    --cp-text-secondary: #475569;    /* Secondary text */
    --cp-text-muted: #67768e;        /* Muted/tertiary text */
    --cp-text-disabled: #94a3b8;     /* Disabled text */
    --cp-text-inverse: #ffffff;      /* Text on dark backgrounds */

    /* Background Colors - Light Mode */
    --cp-bg-primary: #ffffff;        /* Main content background */
    --cp-bg-secondary: #f8fafc;      /* Secondary/subtle backgrounds */
    --cp-bg-tertiary: #f1f5f9;       /* Cards, panels */
    --cp-bg-elevated: #ffffff;       /* Elevated surfaces (modals, dropdowns) */
    --cp-bg-hover: #f1f5f9;          /* Hover state backgrounds */
    --cp-bg-active: #e2e8f0;         /* Active/pressed state */

    /* Border Colors - Light Mode */
    --cp-border-light: #e2e8f0;      /* Subtle borders */
    --cp-border-default: #cbd5e1;    /* Default borders */
    --cp-border-strong: #94a3b8;     /* Strong/focused borders */
    --cp-border-focus: var(--cp-primary);

    /* Shadow Colors */
    --cp-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --cp-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --cp-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --cp-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --cp-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Typography */
    --cp-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --cp-font-heading: 'Plus Jakarta Sans', var(--cp-font-sans);
    --cp-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Font Sizes */
    --cp-text-xs: 0.75rem;     /* 12px */
    --cp-text-sm: 0.875rem;    /* 14px */
    --cp-text-base: 1rem;      /* 16px */
    --cp-text-lg: 1.125rem;    /* 18px */
    --cp-text-xl: 1.25rem;     /* 20px */
    --cp-text-2xl: 1.5rem;     /* 24px */
    --cp-text-3xl: 1.875rem;   /* 30px */
    --cp-text-4xl: 2.25rem;    /* 36px */
    --cp-text-5xl: 3rem;       /* 48px */

    /* Font Weights */
    --cp-font-normal: 400;
    --cp-font-medium: 500;
    --cp-font-semibold: 600;
    --cp-font-bold: 700;

    /* Line Heights */
    --cp-leading-tight: 1.25;
    --cp-leading-normal: 1.5;
    --cp-leading-relaxed: 1.625;

    /* Spacing */
    --cp-space-1: 0.25rem;     /* 4px */
    --cp-space-2: 0.5rem;      /* 8px */
    --cp-space-3: 0.75rem;     /* 12px */
    --cp-space-4: 1rem;        /* 16px */
    --cp-space-5: 1.25rem;     /* 20px */
    --cp-space-6: 1.5rem;      /* 24px */
    --cp-space-8: 2rem;        /* 32px */
    --cp-space-10: 2.5rem;     /* 40px */
    --cp-space-12: 3rem;       /* 48px */

    /* Border Radius */
    --cp-radius-sm: 4px;
    --cp-radius-md: 6px;
    --cp-radius-lg: 8px;
    --cp-radius-xl: 12px;
    --cp-radius-2xl: 16px;
    --cp-radius-full: 9999px;  /* Pill shape buttons */

    /* Transitions */
    --cp-transition-fast: 150ms ease;
    --cp-transition-normal: 200ms ease;
    --cp-transition-slow: 300ms ease;

    /* Z-index scale */
    --cp-z-dropdown: 1000;
    --cp-z-sticky: 1020;
    --cp-z-fixed: 1030;
    --cp-z-modal-backdrop: 1040;
    --cp-z-modal: 1050;
    --cp-z-popover: 1060;
    --cp-z-tooltip: 1070;
    --cp-z-toast: 1080;
}

/* ============================================
   CSS CUSTOM PROPERTIES - DARK MODE
   ============================================ */
html.dark,
.dark {
    /* Text Colors - Dark Mode */
    --cp-text-primary: #f1f5f9;
    --cp-text-secondary: #cbd5e1;
    --cp-text-muted: #94a3b8;
    --cp-text-disabled: #64748b;
    --cp-text-inverse: #0f172a;

    /* Background Colors - Dark Mode */
    --cp-bg-primary: #0f172a;        /* Dark navy - main background */
    --cp-bg-secondary: #1e293b;      /* Slate-800 - secondary bg */
    --cp-bg-tertiary: #334155;       /* Slate-700 - cards, panels */
    --cp-bg-elevated: #1e293b;       /* Elevated surfaces */
    --cp-bg-hover: #334155;          /* Hover state */
    --cp-bg-active: #475569;         /* Active/pressed state */

    /* Border Colors - Dark Mode */
    --cp-border-light: #334155;
    --cp-border-default: #475569;
    --cp-border-strong: #64748b;

    /* Shadows - Dark Mode (more subtle) */
    --cp-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --cp-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --cp-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --cp-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --cp-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);

    /* Adjust brand colors for dark mode (slightly lighter) */
    --cp-primary: #4f46e5;           /* Brighter purple-blue for visibility */
    --cp-primary-hover: #6366f1;
    --cp-secondary: #d946ef;         /* Brighter purple */
    --cp-secondary-hover: #e879f9;
}

/* ============================================
   BASE STYLES
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-family: var(--cp-font-sans);
    font-size: 16px;
    line-height: var(--cp-leading-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--cp-bg-primary);
    color: var(--cp-text-primary);
    font-family: var(--cp-font-sans);
    transition: background-color var(--cp-transition-normal), color var(--cp-transition-normal);
}

/* Headings use Plus Jakarta Sans */
h1, h2, h3, h4, h5, h6,
.cp-heading {
    font-family: var(--cp-font-heading);
    font-weight: var(--cp-font-semibold);
    line-height: var(--cp-leading-tight);
    color: var(--cp-text-primary);
    margin: 0;
}

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

/* Code/monospace */
code, pre, kbd, samp,
.cp-mono {
    font-family: var(--cp-font-mono);
}

/* ============================================
   LINKS
   ============================================ */
a {
    color: var(--cp-primary);
    text-decoration: none;
    transition: color var(--cp-transition-fast);
}

a:hover:not([class*="bg-"]):not(.cp-btn):not(.cp-nav-icon):not(.cp-brand-link) {
    color: var(--cp-secondary);
    text-decoration: underline;
}

/* ============================================
   BUTTONS - ChatProjects Style (Pill Shape)
   ============================================ */
.cp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--cp-space-2);
    padding: var(--cp-space-3) var(--cp-space-6);
    font-family: var(--cp-font-sans);
    font-size: var(--cp-text-base);
    font-weight: var(--cp-font-semibold);
    line-height: 1;
    border: none;
    border-radius: var(--cp-radius-full);
    cursor: pointer;
    transition: all var(--cp-transition-fast);
    text-decoration: none;
}

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

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

/* Primary Button - Deep Blue */
.cp-btn-primary {
    background-color: var(--cp-primary);
    color: var(--cp-text-inverse);
}

.cp-btn-primary:hover:not(:disabled) {
    background-color: var(--cp-primary-hover);
    color: var(--cp-text-inverse);
    text-decoration: none;
}

/* Secondary Button - Purple */
.cp-btn-secondary {
    background-color: var(--cp-secondary);
    color: var(--cp-text-inverse);
}

.cp-btn-secondary:hover:not(:disabled) {
    background-color: var(--cp-secondary-hover);
    color: var(--cp-text-inverse);
    text-decoration: none;
}

/* Accent Button - Yellow */
.cp-btn-accent {
    background-color: var(--cp-accent);
    color: var(--cp-text-primary);
}

.cp-btn-accent:hover:not(:disabled) {
    background-color: var(--cp-accent-hover);
    text-decoration: none;
}

/* Ghost Button */
.cp-btn-ghost {
    background-color: transparent;
    color: var(--cp-text-primary);
    border: 1px solid var(--cp-border-default);
}

.cp-btn-ghost:hover:not(:disabled) {
    background-color: var(--cp-bg-hover);
    border-color: var(--cp-border-strong);
    text-decoration: none;
}

/* Button Sizes */
.cp-btn-sm {
    padding: var(--cp-space-2) var(--cp-space-4);
    font-size: var(--cp-text-sm);
}

.cp-btn-lg {
    padding: var(--cp-space-5) var(--cp-space-10);
    font-size: var(--cp-text-lg);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.cp-input,
.cp-textarea,
.cp-select {
    width: 100%;
    padding: var(--cp-space-3) var(--cp-space-4);
    font-family: var(--cp-font-sans);
    font-size: var(--cp-text-base);
    color: var(--cp-text-primary);
    background-color: var(--cp-bg-primary);
    border: 1px solid var(--cp-border-default);
    border-radius: var(--cp-radius-lg);
    transition: border-color var(--cp-transition-fast), box-shadow var(--cp-transition-fast);
}

.cp-input:focus,
.cp-textarea:focus,
.cp-select:focus {
    outline: none;
    border-color: var(--cp-primary);
    box-shadow: 0 0 0 3px rgba(6, 0, 151, 0.15);
}

html.dark .cp-input:focus,
html.dark .cp-textarea:focus,
html.dark .cp-select:focus {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
}

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

.cp-label {
    display: block;
    margin-bottom: var(--cp-space-2);
    font-size: var(--cp-text-sm);
    font-weight: var(--cp-font-medium);
    color: var(--cp-text-secondary);
}

/* ============================================
   CARDS
   ============================================ */
.cp-card {
    background-color: var(--cp-bg-elevated);
    border: 1px solid var(--cp-border-light);
    border-radius: var(--cp-radius-xl);
    box-shadow: var(--cp-shadow-sm);
    transition: box-shadow var(--cp-transition-normal), border-color var(--cp-transition-normal);
}

.cp-card:hover {
    box-shadow: var(--cp-shadow-md);
    border-color: var(--cp-border-default);
}

.cp-card-body {
    padding: var(--cp-space-6);
}

.cp-card-header {
    padding: var(--cp-space-4) var(--cp-space-6);
    border-bottom: 1px solid var(--cp-border-light);
}

.cp-card-footer {
    padding: var(--cp-space-4) var(--cp-space-6);
    border-top: 1px solid var(--cp-border-light);
}

/* ============================================
   BADGES / TAGS
   ============================================ */
.cp-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--cp-space-1);
    padding: var(--cp-space-1) var(--cp-space-3);
    font-size: var(--cp-text-xs);
    font-weight: var(--cp-font-semibold);
    border-radius: var(--cp-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.cp-badge-primary {
    background-color: rgba(6, 0, 151, 0.1);
    color: var(--cp-primary);
}

.cp-badge-secondary {
    background-color: rgba(193, 15, 255, 0.1);
    color: var(--cp-secondary);
}

.cp-badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--cp-success);
}

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

.cp-badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--cp-danger);
}

html.dark .cp-badge-primary {
    background-color: rgba(79, 70, 229, 0.2);
}

html.dark .cp-badge-secondary {
    background-color: rgba(217, 70, 239, 0.2);
}

/* ============================================
   ALERTS
   ============================================ */
.cp-alert {
    padding: var(--cp-space-4);
    border-radius: var(--cp-radius-lg);
    font-size: var(--cp-text-sm);
}

.cp-alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--cp-success);
    color: var(--cp-success);
}

.cp-alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--cp-warning);
    color: var(--cp-warning);
}

.cp-alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--cp-danger);
    color: var(--cp-danger);
}

.cp-alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--cp-info);
    color: var(--cp-info);
}

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

/* Text utilities */
.cp-text-primary { color: var(--cp-text-primary); }
.cp-text-secondary { color: var(--cp-text-secondary); }
.cp-text-muted { color: var(--cp-text-muted); }
.cp-text-brand { color: var(--cp-primary); }
.cp-text-accent { color: var(--cp-secondary); }

/* Background utilities */
.cp-bg-primary { background-color: var(--cp-bg-primary); }
.cp-bg-secondary { background-color: var(--cp-bg-secondary); }
.cp-bg-tertiary { background-color: var(--cp-bg-tertiary); }

/* Border utilities */
.cp-border { border: 1px solid var(--cp-border-default); }
.cp-border-light { border: 1px solid var(--cp-border-light); }

/* Shadow utilities */
.cp-shadow-sm { box-shadow: var(--cp-shadow-sm); }
.cp-shadow-md { box-shadow: var(--cp-shadow-md); }
.cp-shadow-lg { box-shadow: var(--cp-shadow-lg); }

/* Transition for theme changes */
.cp-theme-transition {
    transition: background-color var(--cp-transition-normal),
                color var(--cp-transition-normal),
                border-color var(--cp-transition-normal),
                box-shadow var(--cp-transition-normal);
}

/* Hide scrollbar but keep functionality */
.cp-scrollbar-thin::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.cp-scrollbar-thin::-webkit-scrollbar-track {
    background: transparent;
}

.cp-scrollbar-thin::-webkit-scrollbar-thumb {
    background: var(--cp-border-default);
    border-radius: 3px;
}

.cp-scrollbar-thin::-webkit-scrollbar-thumb:hover {
    background: var(--cp-border-strong);
}

/* Focus ring utility */
.cp-focus-ring:focus {
    outline: 2px solid var(--cp-primary);
    outline-offset: 2px;
}

/* Screen reader only */
.cp-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;
}

/* ============================================
   THEME TOGGLE COMPONENT
   ============================================ */
.cp-theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--cp-radius-lg);
    color: var(--cp-text-muted);
    cursor: pointer;
    transition: all var(--cp-transition-fast);
}

.cp-theme-toggle:hover {
    background-color: var(--cp-bg-hover);
    color: var(--cp-text-primary);
}

.cp-theme-toggle svg {
    width: 20px;
    height: 20px;
}

/* Sun icon visible in dark mode */
.cp-theme-toggle .cp-sun-icon {
    display: none;
}

html.dark .cp-theme-toggle .cp-sun-icon {
    display: block;
}

/* Moon icon visible in light mode */
.cp-theme-toggle .cp-moon-icon {
    display: block;
}

html.dark .cp-theme-toggle .cp-moon-icon {
    display: none;
}

/* ============================================
   AUTH PAGES OVERRIDES
   ============================================ */
.chatpr-auth-container {
    background: linear-gradient(135deg, var(--cp-bg-secondary) 0%, var(--cp-bg-primary) 100%);
}

html.dark .chatpr-auth-container {
    background: linear-gradient(135deg, var(--cp-bg-primary) 0%, var(--cp-bg-secondary) 100%);
}

.chatpr-auth-card {
    background: var(--cp-bg-elevated);
    border: 1px solid var(--cp-border-light);
}

.chatpr-auth-header h1 {
    font-family: var(--cp-font-heading);
    color: var(--cp-text-primary);
}

.chatpr-auth-header p {
    color: var(--cp-text-muted);
}

.chatpr-form-group label {
    color: var(--cp-text-secondary);
}

.chatpr-form-group input[type="email"],
.chatpr-form-group input[type="password"],
.chatpr-form-group input[type="text"] {
    background-color: var(--cp-bg-primary);
    border-color: var(--cp-border-default);
    color: var(--cp-text-primary);
}

.chatpr-form-group input:focus {
    border-color: var(--cp-primary);
    box-shadow: 0 0 0 3px rgba(6, 0, 151, 0.15);
}

html.dark .chatpr-form-group input:focus {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
}

.chatpr-auth-button {
    background-color: var(--cp-primary) !important;
    border-radius: var(--cp-radius-full);
}

.chatpr-auth-button:hover {
    background-color: var(--cp-primary-hover) !important;
}

.chatpr-auth-footer {
    border-top-color: var(--cp-border-light);
}

.chatpr-auth-footer p {
    color: var(--cp-text-muted);
}

.chatpr-auth-footer a,
.chatpr-link {
    color: var(--cp-primary);
}

.chatpr-auth-footer a:hover,
.chatpr-link:hover {
    color: var(--cp-secondary);
}

/* ============================================
   PRO BADGE GRADIENT
   ============================================ */
.cp-pro-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--cp-secondary) 0%, var(--cp-primary) 100%);
    color: white;
    border-radius: var(--cp-radius-sm);
}

/* ============================================
   CHAT AREA OVERFLOW FIX
   ============================================ */
/* Prevent horizontal scrollbar in chat area */
[data-pro-chat],
.cp-chat-container,
.flex-1.overflow-y-auto {
    overflow-x: hidden;
}

/* Messages container should only scroll vertically */
.cp-chat-messages {
    overflow-x: hidden;
    overflow-y: auto;
}

/* Ensure main content area doesn't overflow horizontally */
main, .cp-main-content {
    overflow-x: hidden;
    max-width: 100%;
}