/* =============================================
   COLOURS.CSS — Modifier classes for theming.
   Stack these onto any component class.

   Example usage:
   <div class="page-hero theme-blue-gradient">
   <div class="highlight-panel theme-blue-left-border">
   <div class="feature-card theme-blue-border-accent">
   <p class="theme-text-brand-blue">

   All values reference variables from root.css.
   ============================================= */


/* =============================================
   GRADIENT BACKGROUNDS
   ============================================= */

.theme-blue-gradient {
    background: linear-gradient(135deg, #1e3a8a 0%, var(--brand-blue) 100%);
    color: white;
}

.theme-blue-gradient-subtle {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: var(--primary-text);
}

.theme-red-gradient {
    background: linear-gradient(135deg, #7f1d1d 0%, var(--brand-red) 100%);
    color: var(--text-contrast);
}

.theme-red-gradient-subtle {
    background: linear-gradient(135deg, #fff1f2 0%, #ffe4e6 100%);
    color: var(--text-primary);
}

.theme-green-gradient {
    background: linear-gradient(135deg, #16a34a 0%, #22c55e 100%);
    color: var(--text-contrast);
}

.theme-amber-gradient {
    background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    color: var(--text-contrast);
}

.theme-dark-gradient {
    background: linear-gradient(135deg, var(--zinc-900) 0%, var(--zinc-700) 100%);
    color: var(--text-contrast);
}

.theme-light-gradient {
    background: linear-gradient(135deg, var(--zinc-50) 0%, var(--zinc-200) 100%);
    color: var(--text-primary);
}


/* =============================================
   SOLID BACKGROUNDS
   ============================================= */

.theme-blue-solid {
    background-color: var(--brand-blue);
    color: var(--text-contrast);
}

.theme-blue-solid-subtle {
    background-color: #eff6ff;
    color: var(--text-primary);
}

.theme-red-solid {
    background-color: var(--brand-red);
    color: var(--text-contrast);
}

.theme-red-solid-subtle {
    background-color: #fff1f2;
    color: var(--text-primary);
}

.theme-green-solid {
    background-color: var(--btn-success-bg);
    color: var(--text-contrast);
}

.theme-amber-solid {
    background-color: #f59e0b;
    color: var(--text-contrast);
}

.theme-dark-solid {
    background-color: var(--zinc-900);
    color: var(--text-contrast);
}

.theme-light-solid {
    background-color: var(--bg-component-light);
    color: var(--text-primary);
}

.theme-white-solid {
    background-color: #ffffff;
    color: var(--text-primary);
}


/* =============================================
   TEXT COLOURS
   ============================================= */

.theme-text-brand-blue  { color: var(--brand-blue); }
.theme-text-brand-red   { color: var(--brand-red); }
.theme-text-primary     { color: var(--text-primary); }
.theme-text-secondary   { color: var(--text-secondary); }
.theme-text-muted       { color: var(--text-muted); }
.theme-text-contrast    { color: var(--text-contrast); }
.theme-text-danger      { color: var(--text-danger); }
.theme-text-green       { color: var(--btn-success-bg); }
.theme-text-amber       { color: #f59e0b; }


/* =============================================
   BORDER ACCENT COLOURS
   Used with highlight-panel (which uses currentColor for its left border)
   and feature-card/media-card hover states.
   ============================================= */

/* Left border accent — works with highlight-panel's border-left: currentColor */
.theme-blue-left-border {
    color: var(--brand-blue);
    background-color: #eff6ff;
}

.theme-red-left-border {
    color: var(--brand-red);
    background-color: #fff1f2;
}

.theme-green-left-border {
    color: #16a34a;
    background-color: #f0fdf4;
}

.theme-amber-left-border {
    color: #f59e0b;
    background-color: #fffbeb;
}

.theme-dark-left-border {
    color: var(--zinc-700);
    background-color: var(--bg-component-light);
}

/* Full border accent — for feature-card and media-card hover */
.theme-blue-border-accent {
    border-color: var(--brand-blue) !important;
}

.theme-red-border-accent {
    border-color: var(--brand-red) !important;
}

.theme-green-border-accent {
    border-color: #16a34a !important;
}

.theme-amber-border-accent {
    border-color: #f59e0b !important;
}

.theme-dark-border-accent {
    border-color: var(--zinc-700) !important;
}

/* Card icon colour — pairs with feature-card's .card-icon */
.theme-blue-border-accent  .card-icon { color: var(--brand-blue); }
.theme-red-border-accent   .card-icon { color: var(--brand-red); }
.theme-green-border-accent .card-icon { color: #16a34a; }
.theme-amber-border-accent .card-icon { color: #f59e0b; }

/* Card hover border — override the hover state per theme */
.theme-blue-border-accent:hover  { border-color: var(--brand-blue) !important; }
.theme-red-border-accent:hover   { border-color: var(--brand-red) !important; }
.theme-green-border-accent:hover { border-color: #16a34a !important; }
.theme-amber-border-accent:hover { border-color: #f59e0b !important; }