/*
 * FFN Design System
 * Shared component classes for consistent UI across all pages.
 * Depends on brand-tokens.css for all variable definitions.
 *
 * Usage: Add <link rel="stylesheet" href="/css/ffn-design-system.css"> after brand-tokens.css
 */

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

.ffn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 2.9rem;
    padding: var(--btn-padding-md);
    border-radius: var(--brand-radius-pill);
    border: 1px solid var(--ffn-ed-border);
    background: var(--brand-surface-white);
    color: var(--ffn-ed-text-muted);
    font-family: var(--font-body);
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
    letter-spacing: 0.08em;
    text-decoration: none;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--btn-transition);
    -webkit-font-smoothing: antialiased;
}

.ffn-btn:hover {
    transform: translateY(-2px);
    color: var(--ffn-ed-text);
    background: #f8fafc;
    border-color: rgba(0, 87, 255, 0.22);
}

/* Primary: solid blue fill */
.ffn-btn-primary,
.ffn-btn.is-primary {
    color: var(--brand-surface-white);
    background: var(--ffn-ed-accent);
    border-color: transparent;
    box-shadow: 0 18px 48px rgba(0, 87, 255, 0.22);
}

.ffn-btn-primary:hover,
.ffn-btn.is-primary:hover {
    color: var(--brand-surface-white);
    background: #0047d5;
    transform: translateY(-2px);
}

/* Secondary: outlined */
.ffn-btn-secondary,
.ffn-btn.is-secondary {
    border: 1px solid var(--ffn-ed-border);
    background: rgba(255, 255, 255, 0.52);
    color: var(--ffn-ed-text);
}

.ffn-btn-secondary:hover,
.ffn-btn.is-secondary:hover {
    border-color: rgba(0, 87, 255, 0.22);
    background: rgba(255, 255, 255, 0.72);
}

/* Ghost: transparent */
.ffn-btn-ghost,
.ffn-btn.is-ghost {
    border-color: transparent;
    background: transparent;
    color: var(--ffn-ed-text-muted);
}

.ffn-btn-ghost:hover,
.ffn-btn.is-ghost:hover {
    background: var(--ffn-ed-accent-soft);
    color: var(--ffn-ed-accent);
    border-color: transparent;
}

/* Green CTA */
.ffn-btn-green,
.ffn-btn.is-green {
    color: var(--brand-surface-white);
    background: var(--brand-green);
    border-color: transparent;
    box-shadow: 0 18px 48px rgba(4, 120, 87, 0.22);
}

.ffn-btn-green:hover,
.ffn-btn.is-green:hover {
    background: #065f46;
    color: var(--brand-surface-white);
    transform: translateY(-2px);
}

/* Gold/Premium CTA */
.ffn-btn-gold,
.ffn-btn.is-gold {
    color: var(--brand-surface-white);
    background: var(--brand-accent-gold);
    border-color: transparent;
}

.ffn-btn-gold:hover,
.ffn-btn.is-gold:hover {
    background: var(--brand-accent-gold-hover);
    color: var(--brand-surface-white);
    transform: translateY(-2px);
}

/* Navy/Dark CTA */
.ffn-btn-navy,
.ffn-btn.is-navy {
    color: var(--brand-surface-white);
    background: var(--brand-navy);
    border-color: transparent;
}

.ffn-btn-navy:hover,
.ffn-btn.is-navy:hover {
    background: var(--brand-navy-light);
    color: var(--brand-surface-white);
    transform: translateY(-2px);
}

/* Button sizes */
.ffn-btn-sm {
    min-height: 2.4rem;
    padding: var(--btn-padding-sm);
    font-size: var(--font-size-xs);
}

.ffn-btn-lg {
    min-height: 3.2rem;
    padding: var(--btn-padding-lg);
    font-size: var(--font-size-sm);
}

/* Dim/muted state */
.ffn-btn.is-dim {
    opacity: 0.5;
    pointer-events: none;
}

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

/* Display headings (hero titles) */
.ffn-display {
    font-family: var(--font-heading);
    font-weight: 900;
    line-height: 0.92;
    letter-spacing: -0.05em;
    color: var(--ffn-ed-text);
    text-transform: uppercase;
}

.ffn-display-xl {
    font-size: clamp(3.2rem, 7vw, 7rem);
}

.ffn-display-lg {
    font-size: clamp(2.8rem, 6.8vw, 5.8rem);
}

.ffn-display-md {
    font-size: clamp(2.2rem, 5vw, 4rem);
}

/* Headings */
.ffn-heading-xl {
    font-family: var(--font-heading);
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--brand-text-heading);
}

.ffn-heading-lg {
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--brand-text-heading);
}

.ffn-heading-md {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--brand-text-heading);
}

.ffn-heading-sm {
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--brand-text-heading);
}

/* Body text */
.ffn-body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--ffn-ed-text-muted);
}

.ffn-body-lg {
    font-size: var(--font-size-md);
    line-height: 1.8;
}

.ffn-body-sm {
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* Labels & mono text */
.ffn-label {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ffn-ed-text-soft);
}

.ffn-mono {
    font-family: var(--font-mono);
}

/* Muted / soft text utilities */
.ffn-text-muted { color: var(--ffn-ed-text-muted); }
.ffn-text-soft { color: var(--ffn-ed-text-soft); }
.ffn-text-accent { color: var(--ffn-ed-accent); }

/* ============================================
   CARDS & PANELS
   ============================================ */

.ffn-card {
    border-radius: var(--ffn-ed-radius-card);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.68), rgba(255, 255, 255, 0.42));
    border: 1px solid rgba(255, 255, 255, 0.82);
    box-shadow: var(--ffn-ed-shadow-card);
    backdrop-filter: blur(22px);
    padding: 1.25rem;
}

.ffn-panel {
    border-radius: var(--ffn-ed-radius-card);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.68), rgba(255, 255, 255, 0.42));
    border: 1px solid rgba(255, 255, 255, 0.82);
    box-shadow: var(--ffn-ed-shadow-card);
    backdrop-filter: blur(22px);
    padding: 1.6rem 1.4rem;
}

/* Solid card variant (for pricing, etc.) */
.ffn-card-solid {
    border-radius: var(--ffn-ed-radius-card);
    background: var(--brand-surface-panel);
    border: 1px solid var(--brand-border);
    box-shadow: var(--brand-shadow-md);
    padding: 1.25rem;
}

.ffn-panel-solid {
    border-radius: var(--ffn-ed-radius-card);
    background: var(--brand-surface-panel);
    border: 1px solid var(--brand-border);
    box-shadow: var(--brand-shadow-md);
    padding: 1.6rem 1.4rem;
}

/* ============================================
   KICKERS & EYEBROWS
   ============================================ */

.ffn-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.45rem 0.7rem;
    border-radius: var(--brand-radius-pill);
    border: 1px solid var(--ffn-ed-border);
    background: var(--ffn-ed-surface);
    color: var(--ffn-ed-text-muted);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.ffn-kicker::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--ffn-ed-accent);
    box-shadow: 0 0 0 0.2rem rgba(0, 87, 255, 0.14);
}

/* ============================================
   BADGES & TAGS
   ============================================ */

.ffn-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem 0.55rem;
    border-radius: 0.4rem;
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.ffn-badge-blue {
    background: var(--ffn-ed-accent-soft);
    color: var(--ffn-ed-accent);
}

.ffn-badge-green {
    background: var(--brand-status-success-bg);
    color: var(--brand-status-success-text);
}

.ffn-badge-gold {
    background: #fef3c7;
    color: #92400e;
}

.ffn-badge-red {
    background: var(--brand-status-danger-bg);
    color: var(--brand-status-danger-text);
}

.ffn-badge-purple {
    background: var(--brand-pos-k-bg);
    color: var(--brand-pos-k-text);
}

/* Position badges */
.ffn-badge-qb { background: var(--brand-pos-qb-bg); color: var(--brand-pos-qb-text); }
.ffn-badge-rb { background: var(--brand-pos-rb-bg); color: var(--brand-pos-rb-text); }
.ffn-badge-wr { background: var(--brand-pos-wr-bg); color: var(--brand-pos-wr-text); }
.ffn-badge-te { background: var(--brand-pos-te-bg); color: var(--brand-pos-te-text); }
.ffn-badge-k  { background: var(--brand-pos-k-bg);  color: var(--brand-pos-k-text); }

/* Pill badge (larger, rounded) */
.ffn-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.3rem;
    height: 2rem;
    padding: 0 0.5rem;
    border-radius: var(--brand-radius-pill);
    background: var(--ffn-ed-accent-soft);
    color: var(--ffn-ed-accent);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 800;
}

/* ============================================
   FORM CONTROLS
   ============================================ */

.ffn-input,
.ffn-select {
    width: 100%;
    min-height: 3rem;
    padding: 0 0.95rem;
    border-radius: var(--brand-radius-lg);
    border: 1px solid var(--ffn-ed-border);
    background: rgba(255, 255, 255, 0.7);
    color: var(--ffn-ed-text);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    transition: border-color var(--brand-transition-base), box-shadow var(--brand-transition-base);
}

.ffn-input:focus,
.ffn-select:focus {
    outline: none;
    border-color: rgba(0, 87, 255, 0.38);
    box-shadow: 0 0 0 0.24rem rgba(0, 87, 255, 0.1);
}

.ffn-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' fill='none' stroke='%2364748b' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.85rem center;
    padding-right: 2.5rem;
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.ffn-section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.6rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--ffn-ed-border);
    color: var(--ffn-ed-text-muted);
    font-size: var(--font-size-sm);
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ============================================
   TABLES
   ============================================ */

.ffn-table {
    width: 100%;
    border-collapse: collapse;
}

.ffn-table th,
.ffn-table td {
    padding: 1rem 0.75rem;
    border-bottom: 1px solid rgba(7, 16, 31, 0.05);
    text-align: left;
}

.ffn-table th {
    color: var(--ffn-ed-text-soft);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.ffn-table tbody tr:hover {
    background: var(--ffn-ed-accent-soft);
}

/* Dark table header variant (data pages) */
.ffn-table-dark-head th {
    background: linear-gradient(135deg, #0c1d39, #183766);
    color: var(--brand-surface-white);
    font-family: var(--font-mono);
    position: sticky;
    top: 0;
    z-index: 10;
}

/* ============================================
   STATUS MESSAGES
   ============================================ */

.ffn-status {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--brand-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.ffn-status-success {
    background: var(--brand-status-success-bg);
    border: 1px solid var(--brand-status-success-border);
    color: var(--brand-status-success-text);
}

.ffn-status-warning {
    background: var(--brand-status-warning-bg);
    border: 1px solid var(--brand-status-warning-border);
    color: var(--brand-status-warning-text);
}

.ffn-status-danger {
    background: var(--brand-status-danger-bg);
    border: 1px solid var(--brand-status-danger-border);
    color: var(--brand-status-danger-text);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.ffn-container {
    width: min(calc(100vw - 2rem), var(--ffn-ed-max-width));
    margin: 0 auto;
}

.ffn-stack { display: grid; gap: 1.5rem; }
.ffn-stack-sm { display: grid; gap: 0.75rem; }
.ffn-stack-lg { display: grid; gap: 2.5rem; }

/* ============================================
   TOGGLE CONTROLS (segmented buttons)
   ============================================ */

.ffn-toggle-group {
    display: inline-flex;
    padding: 3px;
    border-radius: var(--brand-radius-md);
    background: var(--brand-surface-muted);
    gap: 0;
}

.ffn-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.6rem;
    padding: 0 1rem;
    border: 0;
    border-radius: calc(var(--brand-radius-md) - 2px);
    background: transparent;
    color: var(--brand-text-muted);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: 700;
    cursor: pointer;
    transition: background var(--brand-transition-base), color var(--brand-transition-base), box-shadow var(--brand-transition-base);
}

.ffn-toggle:hover {
    color: var(--ffn-ed-text);
}

.ffn-toggle.active,
.ffn-toggle[aria-pressed="true"] {
    background: var(--brand-surface-white);
    color: var(--ffn-ed-text);
    box-shadow: var(--brand-shadow-sm);
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.ffn-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
    color: var(--brand-text-soft);
}

.ffn-breadcrumb a {
    color: var(--brand-accent-blue-light);
    text-decoration: none;
    transition: color var(--brand-transition-fast);
}

.ffn-breadcrumb a:hover {
    color: var(--ffn-ed-accent);
}

.ffn-breadcrumb-sep {
    color: var(--brand-border-strong);
}

.ffn-breadcrumb-current {
    color: var(--brand-slate);
    font-weight: 600;
}

/* ============================================
   SHARED ANIMATION
   ============================================ */

@keyframes ffn-fade-up {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ffn-fade-up {
    animation: ffn-fade-up 0.5s ease both;
}

/* Stagger delays */
.ffn-fade-up-1 { animation-delay: 0.1s; }
.ffn-fade-up-2 { animation-delay: 0.2s; }
.ffn-fade-up-3 { animation-delay: 0.3s; }
.ffn-fade-up-4 { animation-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
    .ffn-fade-up,
    .ffn-btn,
    .ffn-toggle {
        animation: none !important;
        transition: none !important;
    }
}

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

@media (max-width: 768px) {
    .ffn-btn {
        min-height: 2.7rem;
        font-size: var(--font-size-xs);
    }

    .ffn-btn-lg {
        min-height: 3rem;
    }

    .ffn-panel,
    .ffn-panel-solid {
        padding: 1.25rem 1rem;
    }

    .ffn-display-xl {
        font-size: clamp(2.5rem, 7vw, 4.5rem);
    }

    .ffn-display-lg {
        font-size: clamp(2rem, 5.5vw, 3.5rem);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .ffn-btn:hover {
        transform: none;
    }

    .ffn-btn-primary:hover,
    .ffn-btn-green:hover,
    .ffn-btn-gold:hover,
    .ffn-btn-navy:hover {
        transform: none;
    }

    .ffn-btn,
    .ffn-toggle,
    .ffn-input,
    .ffn-select {
        min-height: 44px;
    }
}