@font-face {
    font-family: 'FKGroteskNeue';
    src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
}

:root {
    /* Colors */
    --color-background: rgba(252, 252, 249, 1);
    --color-surface: rgba(255, 255, 253, 1);
    --color-text: rgba(19, 52, 59, 1);
    --color-text-secondary: rgba(98, 108, 113, 1);
    --color-primary: rgba(33, 128, 141, 1);
    --color-primary-hover: rgba(29, 116, 128, 1);
    --color-primary-active: rgba(26, 104, 115, 1);
    --color-secondary: rgba(94, 82, 64, 0.12);
    --color-secondary-hover: rgba(94, 82, 64, 0.2);
    --color-secondary-active: rgba(94, 82, 64, 0.25);
    --color-border: rgba(94, 82, 64, 0.2);
    --color-btn-primary-text: rgba(252, 252, 249, 1);
    --color-card-border: rgba(94, 82, 64, 0.12);
    --color-error: rgba(192, 21, 47, 1);
    --color-danger: rgba(192, 21, 47, 1);
    --color-success: rgba(33, 128, 141, 1);
    --color-warning: #f59e0b;
    --color-focus-ring: rgba(33, 128, 141, 0.4);
    --color-manila: rgba(245, 222, 179, 1);
    --color-legal-pad: rgba(255, 253, 208, 1);
    --color-legal-pad-line: #e0e0e0;
    --color-legal-pad-margin: #ff0000;

    /* Typography */
    --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;
    --font-size-4xl: 30px;
    --font-weight-medium: 500;
    --font-weight-semibold: 550;
    --font-weight-bold: 600;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;

    /* Spacing */
    --space-4: 4px;
    --space-8: 8px;
    --space-12: 12px;
    --space-16: 16px;
    --space-20: 20px;
    --space-24: 24px;
    --space-32: 32px;
    
    /* Additional spacing variables for auth gate */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-base: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);

    /* Animation */
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===========================================
   DARK MODE: Retro Terminal Theme (Amber)
   Inspired by classic amber phosphor CRT monitors
   =========================================== */

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        /* Amber Terminal Theme (Default Dark Mode) */
        --color-background: #0f0d0a;
        --color-surface: #1a1610;
        --color-surface-elevated: #252015;

        /* Text - Amber phosphor glow */
        --color-text: #ffb000;
        --color-text-secondary: #b37a00;
        --color-text-muted: #805500;

        /* Primary actions - Bright amber */
        --color-primary: #ffc933;
        --color-primary-hover: #ffd966;
        --color-primary-active: #e6b800;

        /* Secondary/neutral surfaces */
        --color-secondary: #2a2318;
        --color-secondary-hover: #3a3020;
        --color-secondary-active: #4a3d28;

        /* Borders - Warm brown, visible */
        --color-border: #4a3d28;
        --color-card-border: #3a3020;

        /* Button text on primary buttons */
        --color-btn-primary-text: #0f0d0a;

        /* Status colors - Adjusted for amber context */
        --color-error: #ff6b6b;
        --color-danger: #ff6b6b;
        --color-success: #ffb000;
        --color-warning: #ff8c00;

        /* Focus ring */
        --color-focus-ring: rgba(255, 176, 0, 0.5);

        /* Replace manila/legal pad with dark terminal surfaces */
        --color-manila: #1a1610;
        --color-legal-pad: #1f1a12;
        --color-legal-pad-line: #3a3020;
        --color-legal-pad-margin: #ff6b6b;

        /* Dark mode shadows - subtle glow effect */
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 0 10px rgba(255, 176, 0, 0.03);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.6), 0 0 15px rgba(255, 176, 0, 0.05);
        --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.7), 0 0 25px rgba(255, 176, 0, 0.05);

        /* Terminal text glow (optional enhancement) */
        --text-glow: 0 0 10px rgba(255, 176, 0, 0.3);
    }
}

/* Manual dark mode override (for users who toggle it on) */
[data-theme="dark"] {
    --color-background: #0f0d0a;
    --color-surface: #1a1610;
    --color-surface-elevated: #252015;
    --color-text: #ffb000;
    --color-text-secondary: #b37a00;
    --color-text-muted: #805500;
    --color-primary: #ffc933;
    --color-primary-hover: #ffd966;
    --color-primary-active: #e6b800;
    --color-secondary: #2a2318;
    --color-secondary-hover: #3a3020;
    --color-secondary-active: #4a3d28;
    --color-border: #4a3d28;
    --color-card-border: #3a3020;
    --color-btn-primary-text: #0f0d0a;
    --color-error: #ff6b6b;
    --color-danger: #ff6b6b;
    --color-success: #ffb000;
    --color-warning: #ff8c00;
    --color-focus-ring: rgba(255, 176, 0, 0.5);
    --color-manila: #1a1610;
    --color-legal-pad: #1f1a12;
    --color-legal-pad-line: #3a3020;
    --color-legal-pad-margin: #ff6b6b;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 0 10px rgba(255, 176, 0, 0.03);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.6), 0 0 15px rgba(255, 176, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.7), 0 0 25px rgba(255, 176, 0, 0.05);
    --text-glow: 0 0 10px rgba(255, 176, 0, 0.3);
}

/* ===========================================
   GREEN TERMINAL VARIANT (Matrix/Phosphor P1)
   User-selectable alternative to amber
   =========================================== */

@media (prefers-color-scheme: dark) {
    :root[data-dark-accent="green"]:not([data-theme="light"]) {
        /* Green Terminal Theme */
        --color-background: #0a0f0a;
        --color-surface: #0f1a0f;
        --color-surface-elevated: #152015;

        /* Text - Green phosphor glow */
        --color-text: #33ff33;
        --color-text-secondary: #1a9f1a;
        --color-text-muted: #0d6b0d;

        /* Primary actions - Bright green */
        --color-primary: #00ff66;
        --color-primary-hover: #33ff88;
        --color-primary-active: #00cc52;

        /* Secondary/neutral surfaces */
        --color-secondary: #1a2a1a;
        --color-secondary-hover: #203520;
        --color-secondary-active: #254025;

        /* Borders - Dark green, visible */
        --color-border: #1a3a1a;
        --color-card-border: #153015;

        /* Button text on primary buttons */
        --color-btn-primary-text: #0a0f0a;

        /* Status colors - Adjusted for green context */
        --color-error: #ff4444;
        --color-danger: #ff4444;
        --color-success: #33ff33;
        --color-warning: #ffaa00;

        /* Focus ring */
        --color-focus-ring: rgba(51, 255, 51, 0.5);

        /* Replace manila/legal pad with dark terminal surfaces */
        --color-manila: #0f1a0f;
        --color-legal-pad: #121f12;
        --color-legal-pad-line: #1a3a1a;
        --color-legal-pad-margin: #ff4444;

        /* Dark mode shadows - green glow effect */
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 0 10px rgba(51, 255, 51, 0.03);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.6), 0 0 15px rgba(51, 255, 51, 0.05);
        --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.7), 0 0 25px rgba(51, 255, 51, 0.05);

        /* Terminal text glow */
        --text-glow: 0 0 10px rgba(51, 255, 51, 0.3);
    }
}

/* Manual dark mode with green accent */
[data-theme="dark"][data-dark-accent="green"] {
    --color-background: #0a0f0a;
    --color-surface: #0f1a0f;
    --color-surface-elevated: #152015;
    --color-text: #33ff33;
    --color-text-secondary: #1a9f1a;
    --color-text-muted: #0d6b0d;
    --color-primary: #00ff66;
    --color-primary-hover: #33ff88;
    --color-primary-active: #00cc52;
    --color-secondary: #1a2a1a;
    --color-secondary-hover: #203520;
    --color-secondary-active: #254025;
    --color-border: #1a3a1a;
    --color-card-border: #153015;
    --color-btn-primary-text: #0a0f0a;
    --color-error: #ff4444;
    --color-danger: #ff4444;
    --color-success: #33ff33;
    --color-warning: #ffaa00;
    --color-focus-ring: rgba(51, 255, 51, 0.5);
    --color-manila: #0f1a0f;
    --color-legal-pad: #121f12;
    --color-legal-pad-line: #1a3a1a;
    --color-legal-pad-margin: #ff4444;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 0 10px rgba(51, 255, 51, 0.03);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.6), 0 0 15px rgba(51, 255, 51, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.7), 0 0 25px rgba(51, 255, 51, 0.05);
    --text-glow: 0 0 10px rgba(51, 255, 51, 0.3);
}

/* Base styles */
* {
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
}

body {
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

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); }



/* ================================
   Subscription Gating Styles
   ================================ */

/* Upgrade prompt styling */
.upgrade-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-16);
    margin: var(--space-8) 0;
    background: linear-gradient(135deg, rgba(33, 128, 141, 0.08) 0%, rgba(33, 128, 141, 0.02) 100%);
    border: 1px dashed var(--color-primary);
    border-radius: var(--radius-md);
    text-align: center;
}

.upgrade-prompt-text {
    margin: 0 0 var(--space-12) 0;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.upgrade-icon {
    margin-right: var(--space-4);
}

.upgrade-prompt-btn {
    min-width: 120px;
}

/* Free tier gating - hide date-related elements */
body.free-tier .dates-gated {
    display: none !important;
}

/* Show upgrade prompts only for free tier */
.upgrade-prompt-container {
    display: none;
}

body.free-tier .upgrade-prompt-container {
    display: block;
}

/* Subscribed users see full dates UI */
body.subscribed .dates-gated {
    display: block;
}

body.subscribed .upgrade-prompt-container {
    display: none;
}

/* Dark mode upgrade prompt adjustments */
[data-theme="dark"] .upgrade-prompt,
.dark-mode .upgrade-prompt {
    background: linear-gradient(135deg, rgba(var(--accent-color-rgb, 255, 176, 0), 0.1) 0%, rgba(var(--accent-color-rgb, 255, 176, 0), 0.02) 100%);
    border-color: var(--color-primary);
}

/* Subscription button state styling */
.dropdown-item.subscription-active {
    color: var(--color-success, #28a745);
}

.dropdown-item.subscription-active .dropdown-icon {
    color: var(--color-success, #28a745);
}

.dropdown-item.subscription-warning {
    color: var(--color-warning, #e67700);
    font-weight: 500;
}

.dropdown-item.subscription-warning .dropdown-icon {
    color: var(--color-warning, #e67700);
}

/* Dark mode subscription button states */
[data-theme="dark"] .dropdown-item.subscription-active,
.dark-mode .dropdown-item.subscription-active {
    color: var(--color-success, #4caf50);
}

[data-theme="dark"] .dropdown-item.subscription-warning,
.dark-mode .dropdown-item.subscription-warning {
    color: var(--color-warning, #ffb300);
}

/* iPhone 15 Pro and similar narrow devices - viewport overflow containment */
@media (max-width: 400px) {
    html, body {
        overflow-x: hidden;
        max-width: 100vw;
    }
}