/* ==========================================================================
   CSS Custom Properties (Theme Variables)
   ========================================================================== 
   To change the theme, modify these variables.
   All colors, spacing, typography, and component values derive from here.
*/

:root {
    /* -------------------------
       Color Palette - Primary (derived from logo teal-blue ~#4AABBF)
       ------------------------- */
    --color-primary-50:  #e6f6fa;
    --color-primary-100: #b8e6f0;
    --color-primary-200: #8ad6e6;
    --color-primary-300: #5cc5db;
    --color-primary-400: #3db8d1;
    --color-primary-500: #1ea8c4;
    --color-primary-600: #1a96b0;
    --color-primary-700: #157d94;
    --color-primary-800: #116578;
    --color-primary-900: #0a4150;

    /* -------------------------
       Color Palette - Accent/Wine (derived from logo maroon ~#802040)
       ------------------------- */
    --color-accent-50:  #fce8ee;
    --color-accent-100: #f5b8c8;
    --color-accent-200: #ee88a2;
    --color-accent-300: #d45a7c;
    --color-accent-400: #b83a5e;
    --color-accent-500: #982042;
    --color-accent-600: #802040;
    --color-accent-700: #661a34;
    --color-accent-800: #4d1427;
    --color-accent-900: #340d1b;

    /* -------------------------
       Color Palette - Success/Green
       ------------------------- */
    --color-success-50: #e8f5e9;
    --color-success-100: #c8e6c9;
    --color-success-200: #a5d6a7;
    --color-success-300: #81c784;
    --color-success-400: #66bb6a;
    --color-success-500: #4caf50;
    --color-success-600: #43a047;
    --color-success-700: #388e3c;
    --color-success-800: #2e7d32;
    --color-success-900: #1b5e20;

    /* -------------------------
       Neutral Colors
       ------------------------- */
    --color-neutral-0: #ffffff;
    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #eeeeee;
    --color-neutral-300: #e0e0e0;
    --color-neutral-400: #bdbdbd;
    --color-neutral-500: #9e9e9e;
    --color-neutral-600: #757575;
    --color-neutral-700: #616161;
    --color-neutral-800: #424242;
    --color-neutral-900: #212121;

    /* -------------------------
       Semantic Colors
       ------------------------- */
    --color-background: var(--color-neutral-0);
    --color-surface: var(--color-neutral-0);
    --color-text-primary: var(--color-neutral-900);
    --color-text-secondary: var(--color-neutral-600);
    --color-text-muted: var(--color-neutral-500);
    --color-text-inverse: var(--color-neutral-0);
    --color-border: var(--color-neutral-300);
    --color-border-light: var(--color-neutral-200);
    --color-link: var(--color-primary-700);
    --color-link-hover: var(--color-primary-800);

    /* -------------------------
       Typography
       ------------------------- */
    --font-family-base: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-heading: var(--font-family-base);
    --font-family-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-md: 1.125rem;   /* 18px */
    --font-size-lg: 1.25rem;    /* 20px */
    --font-size-xl: 1.5rem;     /* 24px */
    --font-size-2xl: 2rem;      /* 32px */
    --font-size-3xl: 2.5rem;    /* 40px */

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

    --line-height-tight: 1.15;
    --line-height-base: 1.5;
    --line-height-relaxed: 1.75;

    /* -------------------------
       Spacing Scale
       ------------------------- */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */

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

    /* -------------------------
       Shadows
       ------------------------- */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.12);

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

    /* -------------------------
       Z-Index Scale
       ------------------------- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;

    /* -------------------------
       Component: Card
       ------------------------- */
    --card-bg: var(--color-surface);
    --card-bg-gradient: linear-gradient(180deg, var(--color-primary-50) 0%, var(--color-primary-200) 100%);
    --card-border: 2px solid var(--color-primary-400);
    --card-radius: var(--radius-xl);
    --card-shadow: var(--shadow-md);
    --card-padding: var(--spacing-8);

    /* -------------------------
       Component: Table
       ------------------------- */
    --table-header-bg: linear-gradient(180deg, var(--color-primary-200) 0%, var(--color-primary-400) 100%);
    --table-header-text: var(--color-text-inverse);
    --table-header-border: 2px solid var(--color-primary-400);
    --table-stripe-bg: var(--color-neutral-50);

    /* -------------------------
       Component: Tag/Badge
       ------------------------- */
    --tag-radius: var(--radius-full);
    --tag-padding: var(--spacing-2) var(--spacing-3);
    --tag-font-size: var(--font-size-sm);
    --tag-font-weight: var(--font-weight-semibold);

    /* -------------------------
       Component: Nutrition Label
       ------------------------- */
    --nutrition-border: 2px solid var(--color-neutral-900);
    --nutrition-bg: var(--color-surface);
    --nutrition-max-width: 400px;

    /* -------------------------
       Component: Tooltip
       ------------------------- */
    --tooltip-bg: var(--color-surface);
    --tooltip-border: 1px solid var(--color-border);
    --tooltip-shadow: var(--shadow-lg);

    /* -------------------------
       Tag Color Palette (for dynamic tags)
       ------------------------- */
    --tag-color-1: #198754;
    --tag-color-2: #20c997;
    --tag-color-3: #17a2b8;
    --tag-color-4: #28a745;
    --tag-color-5: #1e7e34;
    --tag-color-6: #00796b;
    --tag-color-7: #009688;
    --tag-color-8: #4caf50;
    --tag-color-9: #388e3c;
    --tag-color-10: #8bc34a;
    --tag-color-11: #66bb6a;
    --tag-color-12: #43a047;
    --tag-color-13: #2e7d32;

    /* -------------------------
       Semantic Category Colors
       (single source of truth — change here to retheme all category indicators)
       ------------------------- */
    --color-category-favorite:          #c0254d;           /* Ruby / Crimson Red */
    --color-category-reviews:           #d97706;           /* Gold / Amber         */
    --color-category-wishlist:          #0ea5e9;           /* Sky Blue             */
    --color-category-tried:             #10b981;           /* Emerald / Mint Green */
    --color-category-user-added:        #d97706;           /* Gold / Amber         */

    /* Subtle/translucent variants — defined here so no hex values appear elsewhere */
    --color-category-user-added-bg:     rgba(124,58,237,0.04);
    --color-category-user-added-shadow: rgba(124,58,237,0.08);
    --color-category-user-added-border: rgba(124,58,237,0.45);
}

/* ==========================================================================
   Category Icon Color Utilities
   ========================================================================== */
.icon-category--favorite   { color: var(--color-category-favorite);   }
.icon-category--reviews    { color: var(--color-category-reviews);    }
.icon-category--wishlist   { color: var(--color-category-wishlist);   }
.icon-category--tried      { color: var(--color-category-tried);      }
.icon-category--user-added { color: var(--color-category-user-added); }

/* ==========================================================================
   Locked / Auth-Required Action Wrapper
   Wrap disabled buttons in this span so the title tooltip fires even when
   the inner button suppresses pointer-events (browser behaviour on :disabled).
   ========================================================================== */
.action-locked-wrap {
    cursor: not-allowed;
    display: inline-flex;
    align-items: center;
}
.action-locked-wrap > * {
    pointer-events: none;   /* inner element yields hover to the wrapper */
}
/* Clearly gray — not just dimmed */
.action-locked-wrap button,
.action-locked-wrap .btn-ghost {
    color: var(--color-neutral-400) !important;
    border-color: var(--color-neutral-300) !important;
    background: transparent !important;
    box-shadow: none !important;
    opacity: 1;
}

/* ==========================================================================
   Dark Theme Override (optional - enable by adding class="dark" to <html>)
   ========================================================================== */
.dark {
    --color-background: var(--color-neutral-900);
    --color-surface: var(--color-neutral-800);
    --color-text-primary: var(--color-neutral-100);
    --color-text-secondary: var(--color-neutral-400);
    --color-text-muted: var(--color-neutral-500);
    --color-border: var(--color-neutral-700);
    --color-border-light: var(--color-neutral-800);
    
    --card-bg: var(--color-surface);
    --card-bg-gradient: linear-gradient(180deg, var(--color-neutral-800) 0%, var(--color-neutral-700) 100%);
    --card-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    
    --nutrition-bg: var(--color-neutral-800);
    --nutrition-border: 2px solid var(--color-neutral-300);
}