/* =============================================================
   مكوّن الأزرار - One Teacher Platform
   ============================================================= */

/* ===== Base Button ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.4rem;
    border-radius: var(--border-radius);
    font-family: var(--font-arabic);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    user-select: none;
    letter-spacing: 0.3px;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.12);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.btn:hover::before { opacity: 1; }

.btn:active {
    transform: scale(0.97);
}

/* ===== حجوم الأزرار ===== */
.btn-xs  { padding: 0.3rem 0.8rem; font-size: var(--font-size-xs); }
.btn-sm  { padding: 0.45rem 1rem;  font-size: var(--font-size-sm); }
.btn-md  { padding: 0.65rem 1.5rem; font-size: var(--font-size-base); }
.btn-lg  { padding: 0.85rem 2rem;  font-size: var(--font-size-lg); }
.btn-xl  { padding: 1.1rem 2.5rem; font-size: var(--font-size-xl); border-radius: var(--border-radius-xl); }
.btn-block { width: 100%; }
.btn-icon { padding: 0.6rem; border-radius: var(--border-radius); aspect-ratio: 1; }
.btn-circle { border-radius: var(--border-radius-full); }

/* ===== أنواع الأزرار ===== */

/* Primary */
.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(var(--color-primary-rgb), 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(var(--color-primary-rgb), 0.55);
    color: #fff;
}

/* Secondary */
.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-secondary:hover {
    background: rgba(var(--color-primary-rgb), 0.12);
    transform: translateY(-2px);
    color: var(--color-primary);
}

/* Ghost */
.btn-ghost {
    background: rgba(var(--color-primary-rgb), 0.08);
    color: var(--color-primary);
    border-color: var(--border-color);
}
.btn-ghost:hover {
    background: rgba(var(--color-primary-rgb), 0.18);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* Danger */
.btn-danger {
    background: var(--gradient-danger);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(var(--color-danger-rgb), 0.3);
}
.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(var(--color-danger-rgb), 0.5);
    color: #fff;
}

/* Warning */
.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(245,158,11,0.3);
}
.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(245,158,11,0.5);
    color: #fff;
}

/* Success */
.btn-success {
    background: var(--gradient-success);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(var(--color-success-rgb), 0.3);
}
.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(var(--color-success-rgb), 0.5);
    color: #fff;
}

/* Accent */
.btn-accent {
    background: var(--gradient-accent);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(123,66,246,0.35);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(123,66,246,0.55);
    color: #fff;
}

/* Gold */
.btn-gold {
    background: var(--gradient-gold);
    color: #1a0f00;
    border-color: transparent;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(255,215,0,0.35);
}
.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(255,215,0,0.55);
    color: #1a0f00;
}

/* Dark */
.btn-dark {
    background: rgba(0,0,0,0.5);
    color: var(--color-text);
    border-color: var(--border-color);
    backdrop-filter: blur(10px);
}
.btn-dark:hover {
    background: rgba(0,0,0,0.7);
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
}

/* Glass */
.btn-glass {
    background: rgba(255,255,255,0.1);
    color: var(--color-text);
    border-color: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
}
.btn-glass:hover {
    background: rgba(255,255,255,0.18);
    border-color: rgba(255,255,255,0.35);
    transform: translateY(-2px);
}

/* Disabled */
.btn:disabled, .btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Loading */
.btn.loading {
    pointer-events: none;
}
.btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* ===== Group ===== */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}