/* ==========================================================================
   Modeer — Modern Button System
   Ultra-premium SaaS aesthetic (Apple / Stripe / Vercel level)
   Works in both store.html (store.css tokens) and dashboard (styles-modeer.css tokens)
   ========================================================================== */

/* ── Token bridge: ensure every token has a fallback ──────────────────────── */
:root {
    --btn-accent:        var(--accent,       #6366F1);
    --btn-accent-dark:   var(--accent-dark,  #4F46E5);
    --btn-accent-hover:  var(--accent-hover, #4338CA);
    --btn-text-primary:  var(--text-primary, #1D1D1F);
    --btn-text-secondary:var(--text-secondary,#6E6E73);
    --btn-bg-soft:       var(--bg-soft,      #F4F4F7);
    --btn-bg-card:       var(--bg-card,      #FFFFFF);
    --btn-border:        var(--border,       rgba(0,0,0,0.08));
    --btn-border-strong: var(--border-strong,rgba(0,0,0,0.13));
    --btn-shadow-sm:     var(--shadow-sm,    0 1px 3px rgba(0,0,0,0.06));
    --btn-shadow-md:     var(--shadow-md,    0 4px 16px -4px rgba(0,0,0,0.10));
    --btn-radius-pill:   9999px;
    --btn-radius-sq:     12px;
    --btn-transition:    all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    --btn-accent-glow:   0 4px 14px 0 rgba(99, 102, 241, 0.32);
    --btn-accent-glow-lg:0 8px 24px -4px rgba(99, 102, 241, 0.40);
    --btn-success:       var(--success, #10B981);
    --btn-danger:        var(--danger,  #EF4444);
}

[data-bs-theme="dark"] {
    --btn-bg-soft:       var(--bg-soft,  #3A3A3C);
    --btn-bg-card:       var(--bg-card,  #2C2C2E);
    --btn-border:        rgba(255,255,255,0.10);
    --btn-border-strong: rgba(255,255,255,0.16);
    --btn-accent-glow:   0 4px 14px 0 rgba(99, 102, 241, 0.45);
    --btn-accent-glow-lg:0 8px 24px -4px rgba(99, 102, 241, 0.55);
}

/* ==========================================================================
   Task 1 — Base class
   ========================================================================== */
.btn-modern {
    /* Reset */
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: none;
    margin: 0;
    text-decoration: none;
    cursor: pointer;

    /* Layout */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;

    /* Typography */
    font-family: 'Inter', 'Tajawal', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: -0.01em;
    white-space: nowrap;

    /* Shape */
    border-radius: var(--btn-radius-sq);
    padding: 10px 20px;

    /* Transitions */
    transition: var(--btn-transition);
    position: relative;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Size variants */
.btn-modern.btn-sm {
    font-size: 12.5px;
    padding: 7px 14px;
    gap: 5px;
    border-radius: 9px;
}

.btn-modern.btn-lg {
    font-size: 15.5px;
    padding: 13px 28px;
    gap: 9px;
    border-radius: 14px;
}

.btn-modern.btn-pill         { border-radius: var(--btn-radius-pill); }
.btn-modern.btn-sm.btn-pill  { border-radius: var(--btn-radius-pill); }
.btn-modern.btn-lg.btn-pill  { border-radius: var(--btn-radius-pill); }

/* Accessible focus ring — keyboard only */
.btn-modern:focus-visible {
    outline: 2.5px solid var(--btn-accent);
    outline-offset: 3px;
}
.btn-modern:focus:not(:focus-visible) {
    outline: none;
}

/* Disabled */
.btn-modern:disabled,
.btn-modern[aria-disabled="true"] {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* Loading spinner inside button */
.btn-modern .btn-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: btn-spin 0.7s linear infinite;
    flex-shrink: 0;
}

@keyframes btn-spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   Task 5 — Icon utility
   ========================================================================== */
.btn-with-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-with-icon i,
.btn-with-icon svg,
.btn-with-icon .fa,
.btn-with-icon .fas,
.btn-with-icon .fab,
.btn-with-icon .far {
    font-size: 0.875em;
    flex-shrink: 0;
    line-height: 1;
    position: relative;
    top: 0;
}

/* ==========================================================================
   Task 2 — Primary button
   ========================================================================== */
.btn-modern-primary {
    background: var(--btn-accent);
    color: #FFFFFF;
    border: 1.5px solid transparent;
    box-shadow: var(--btn-accent-glow);
}

.btn-modern-primary:hover {
    background: var(--btn-accent-dark);
    box-shadow: var(--btn-accent-glow-lg);
    transform: translateY(-1px);
    color: #FFFFFF;
}

.btn-modern-primary:active {
    transform: scale(0.975) translateY(0);
    box-shadow: var(--btn-accent-glow);
    transition-duration: 0.08s;
}

/* Dark variant (Apple/Vercel style) */
.btn-modern-dark {
    background: var(--btn-text-primary);
    color: var(--btn-bg-card);
    border: 1.5px solid transparent;
    box-shadow: 0 4px 14px 0 rgba(0,0,0,0.18);
}

.btn-modern-dark:hover {
    background: #000;
    box-shadow: 0 8px 24px -4px rgba(0,0,0,0.28);
    transform: translateY(-1px);
    color: #FFFFFF;
}

.btn-modern-dark:active {
    transform: scale(0.975) translateY(0);
    transition-duration: 0.08s;
}

[data-bs-theme="dark"] .btn-modern-dark {
    background: rgba(255,255,255,0.92);
    color: #111;
    box-shadow: 0 4px 14px 0 rgba(0,0,0,0.40);
}

[data-bs-theme="dark"] .btn-modern-dark:hover {
    background: #FFFFFF;
    color: #000;
    box-shadow: 0 8px 24px -4px rgba(0,0,0,0.55);
}

/* Success / Danger primaries */
.btn-modern-success {
    background: var(--btn-success);
    color: #FFFFFF;
    border: 1.5px solid transparent;
    box-shadow: 0 4px 14px 0 rgba(16,185,129,0.28);
}
.btn-modern-success:hover {
    background: #059669;
    box-shadow: 0 8px 20px -4px rgba(16,185,129,0.40);
    transform: translateY(-1px);
    color: #FFFFFF;
}
.btn-modern-success:active { transform: scale(0.975) translateY(0); transition-duration: 0.08s; }

.btn-modern-danger {
    background: var(--btn-danger);
    color: #FFFFFF;
    border: 1.5px solid transparent;
    box-shadow: 0 4px 14px 0 rgba(239,68,68,0.28);
}
.btn-modern-danger:hover {
    background: #DC2626;
    box-shadow: 0 8px 20px -4px rgba(239,68,68,0.40);
    transform: translateY(-1px);
    color: #FFFFFF;
}
.btn-modern-danger:active { transform: scale(0.975) translateY(0); transition-duration: 0.08s; }

/* ==========================================================================
   Task 3 — Secondary / outline button
   ========================================================================== */
.btn-modern-secondary {
    background: var(--btn-bg-card);
    color: var(--btn-text-primary);
    border: 1.5px solid var(--btn-border-strong);
    box-shadow: var(--btn-shadow-sm);
}

.btn-modern-secondary:hover {
    background: var(--btn-bg-soft);
    border-color: var(--btn-accent);
    color: var(--btn-accent);
    box-shadow: var(--btn-shadow-md);
}

.btn-modern-secondary:active {
    background: var(--btn-bg-soft);
    transform: scale(0.98);
    transition-duration: 0.08s;
}

[data-bs-theme="dark"] .btn-modern-secondary {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.14);
    color: var(--btn-text-primary);
}

[data-bs-theme="dark"] .btn-modern-secondary:hover {
    background: rgba(255,255,255,0.10);
    border-color: var(--btn-accent);
    color: var(--btn-accent);
}

/* Outline-only accent variant */
.btn-modern-outline {
    background: transparent;
    color: var(--btn-accent);
    border: 1.5px solid var(--btn-accent);
    box-shadow: none;
}

.btn-modern-outline:hover {
    background: var(--btn-accent);
    color: #FFFFFF;
    box-shadow: var(--btn-accent-glow);
    transform: translateY(-1px);
}

.btn-modern-outline:active {
    transform: scale(0.975) translateY(0);
    transition-duration: 0.08s;
}

/* ==========================================================================
   Task 4 — Ghost / subtle button
   ========================================================================== */
.btn-modern-ghost {
    background: transparent;
    color: var(--btn-text-secondary);
    border: 1.5px solid transparent;
    box-shadow: none;
}

.btn-modern-ghost:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--btn-text-primary);
    border-color: transparent;
}

.btn-modern-ghost:active {
    background: rgba(0, 0, 0, 0.09);
    transform: scale(0.98);
    transition-duration: 0.08s;
}

[data-bs-theme="dark"] .btn-modern-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--btn-text-primary);
}

[data-bs-theme="dark"] .btn-modern-ghost:active {
    background: rgba(255, 255, 255, 0.12);
}

/* Ghost danger (cancel / delete) */
.btn-modern-ghost-danger {
    background: transparent;
    color: var(--btn-text-secondary);
    border: 1.5px solid transparent;
}

.btn-modern-ghost-danger:hover {
    background: rgba(239, 68, 68, 0.08);
    color: var(--btn-danger);
}

.btn-modern-ghost-danger:active {
    background: rgba(239, 68, 68, 0.14);
    transform: scale(0.98);
    transition-duration: 0.08s;
}

/* ==========================================================================
   Icon-only button (circular)
   ========================================================================== */
.btn-modern-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    background: var(--btn-bg-soft);
    color: var(--btn-text-secondary);
    border: 1.5px solid var(--btn-border);
    box-shadow: var(--btn-shadow-sm);
    font-size: 14px;
}

.btn-modern-icon:hover {
    background: var(--btn-bg-card);
    color: var(--btn-text-primary);
    border-color: var(--btn-border-strong);
    box-shadow: var(--btn-shadow-md);
    transform: translateY(-1px);
}

.btn-modern-icon:active {
    transform: scale(0.92);
    transition-duration: 0.08s;
}

.btn-modern-icon.btn-sm { width: 30px; height: 30px; font-size: 12px; }
.btn-modern-icon.btn-lg { width: 44px; height: 44px; font-size: 16px; }

/* ==========================================================================
   Grouped buttons (segmented control)
   ========================================================================== */
.btn-modern-group {
    display: inline-flex;
    align-items: center;
    background: var(--btn-bg-soft);
    border: 1.5px solid var(--btn-border);
    border-radius: var(--btn-radius-sq);
    padding: 3px;
    gap: 2px;
}

.btn-modern-group .btn-modern {
    border-radius: calc(var(--btn-radius-sq) - 3px);
    padding: 7px 14px;
    font-size: 13px;
    background: transparent;
    color: var(--btn-text-secondary);
    border: none;
    box-shadow: none;
}

.btn-modern-group .btn-modern:hover {
    background: var(--btn-bg-card);
    color: var(--btn-text-primary);
    transform: none;
}

.btn-modern-group .btn-modern.active,
.btn-modern-group .btn-modern[aria-selected="true"] {
    background: var(--btn-bg-card);
    color: var(--btn-text-primary);
    box-shadow: var(--btn-shadow-sm);
}

/* ==========================================================================
   WhatsApp CTA (used in cart checkout)
   ========================================================================== */
.btn-modern-whatsapp {
    background: #25D366;
    color: #FFFFFF;
    border: 1.5px solid transparent;
    box-shadow: 0 4px 14px 0 rgba(37,211,102,0.30);
}

.btn-modern-whatsapp:hover {
    background: #1fba58;
    box-shadow: 0 8px 20px -4px rgba(37,211,102,0.42);
    transform: translateY(-1px);
    color: #FFFFFF;
}

.btn-modern-whatsapp:active {
    transform: scale(0.975) translateY(0);
    transition-duration: 0.08s;
}