/**
 * RenderCAD Studio Button System
 * Unified button components for authenticated pages
 */

/* ========================================
   BASE BUTTON
   ======================================== */
.studio-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--btn-padding-md);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
    white-space: nowrap;
    /* user-select: none removed - blocked modal button clicks */
}

.studio-btn:focus {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

.studio-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Size Variants */
.studio-btn-sm {
    padding: var(--btn-padding-sm);
    font-size: var(--text-xs);
}

.studio-btn-lg {
    padding: var(--btn-padding-lg);
    font-size: var(--text-base);
}

/* ========================================
   PRISMATIC BUTTON (Primary Action)
   ======================================== */
.studio-btn-prismatic {
    background: linear-gradient(-75deg,
        rgba(255,255,255,0.05),
        rgba(255,255,255,0.2),
        rgba(255,255,255,0.05)
    );
    border: 1px solid var(--border-heavy);
    color: var(--text-primary);
    backdrop-filter: blur(4px);
    box-shadow:
        inset 0 1px 1px rgba(0, 0, 0, 0.05),
        inset 0 -1px 1px rgba(255, 255, 255, 0.5),
        0 2px 4px rgba(0, 0, 0, 0.2);
}

.studio-btn-prismatic:hover:not(:disabled) {
    background: linear-gradient(-75deg,
        rgba(255,255,255,0.1),
        rgba(255,255,255,0.3),
        rgba(255,255,255,0.1)
    );
    border-color: var(--accent-cyan-hover);
    transform: translateY(-1px);
    box-shadow:
        inset 0 1px 1px rgba(0, 0, 0, 0.05),
        inset 0 -1px 1px rgba(255, 255, 255, 0.5),
        0 4px 8px rgba(0, 0, 0, 0.3);
}

.studio-btn-prismatic:active:not(:disabled) {
    transform: translateY(0);
    box-shadow:
        inset 0 1px 1px rgba(0, 0, 0, 0.05),
        inset 0 -1px 1px rgba(255, 255, 255, 0.5),
        0 1px 2px rgba(0, 0, 0, 0.2);
}

/* ========================================
   OUTLINE BUTTON (Secondary Action)
   ======================================== */
.studio-btn-outline {
    background: transparent;
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
}

.studio-btn-outline:hover:not(:disabled) {
    background: var(--bg-surface);
    border-color: var(--border-heavy);
}

.studio-btn-outline:active:not(:disabled) {
    background: var(--bg-surface-hover);
}

/* ========================================
   NAVBAR BUTTON (Header Navigation)
   Premium silver/gray gradient with cyan admin accent
   ======================================== */
/* Base styles for all studio-btn-nav buttons - match Download All button */
.studio-btn-nav {
    background: linear-gradient(-75deg, rgba(255,255,255,0.05), rgba(255,255,255,0.2), rgba(255,255,255,0.05));
    border: 1px solid rgba(255,255,255,0.5);
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Segoe UI', Arial, sans-serif;
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05),
                inset 0 -1px 1px rgba(255, 255, 255, 0.5),
                0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.2s ease;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    white-space: nowrap;
    text-align: center;
}

.studio-btn-nav:hover:not(:disabled) {
    background: linear-gradient(-75deg, rgba(255,255,255,0.1), rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05),
                inset 0 -1px 1px rgba(255, 255, 255, 0.5),
                0 2px 6px rgba(0, 0, 0, 0.3);
}

.studio-btn-nav:active:not(:disabled) {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.06) 100%);
    transform: translateY(1px);
}

/* Navbar-specific overrides (maintains existing specificity) - match Download All button */
.navbar-dark .navbar-nav .studio-btn-nav,
.navbar .studio-btn-nav {
    background: linear-gradient(-75deg, rgba(255,255,255,0.05), rgba(255,255,255,0.2), rgba(255,255,255,0.05));
    border: 1px solid rgba(255,255,255,0.5);
    color: white;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    white-space: nowrap;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05),
                inset 0 -1px 1px rgba(255, 255, 255, 0.5),
                0 2px 4px rgba(0, 0, 0, 0.2);
}

.navbar-dark .navbar-nav .studio-btn-nav:hover:not(:disabled),
.navbar .studio-btn-nav:hover:not(:disabled) {
    background: linear-gradient(-75deg, rgba(255,255,255,0.1), rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05),
                inset 0 -1px 1px rgba(255, 255, 255, 0.5),
                0 2px 6px rgba(0, 0, 0, 0.3);
}

.navbar-dark .navbar-nav .studio-btn-nav:active:not(:disabled),
.navbar .studio-btn-nav:active:not(:disabled) {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.06) 100%);
    transform: translateY(1px);
}

/* Icon styles for all studio-btn-nav buttons */
.studio-btn-nav i {
    opacity: 0.9;
    margin-right: 0;
    font-size: 13px;
}

.studio-btn-nav:hover i {
    opacity: 1;
}

/* Navbar-specific icon overrides */
.navbar-dark .navbar-nav .studio-btn-nav i,
.navbar .studio-btn-nav i {
    opacity: 0.9;
    margin-right: 0;
    font-size: 13px;
}

.navbar-dark .navbar-nav .studio-btn-nav:hover i,
.navbar .studio-btn-nav:hover i {
    opacity: 1;
}

/* Admin variant with subtle cyan accent */
.navbar-dark .navbar-nav .studio-btn-nav-admin,
.navbar .studio-btn-nav-admin {
    background: linear-gradient(135deg, rgba(0,212,255,0.15) 0%, rgba(0,212,255,0.08) 100%);
    border-color: rgba(0,212,255,0.35);
    color: rgba(0,212,255,0.95);
}

.navbar-dark .navbar-nav .studio-btn-nav-admin:hover,
.navbar .studio-btn-nav-admin:hover {
    background: linear-gradient(135deg, rgba(0,212,255,0.22) 0%, rgba(0,212,255,0.12) 100%);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan-hover);
    box-shadow: 0 2px 4px rgba(0,212,255,0.2);
}

/* ========================================
   GHOST BUTTON (Tertiary Action)
   ======================================== */
.studio-btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-secondary);
}

.studio-btn-ghost:hover:not(:disabled) {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.studio-btn-ghost:active:not(:disabled) {
    background: var(--bg-surface-hover);
}

/* ========================================
   SUCCESS VARIANT
   ======================================== */
.studio-btn-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-dark) 100%);
    border: none;
    color: white;
}

.studio-btn-success:hover:not(:disabled) {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

/* ========================================
   DANGER VARIANT
   ======================================== */
.studio-btn-danger {
    background: var(--error);
    border: none;
    color: white;
}

.studio-btn-danger:hover:not(:disabled) {
    background: var(--error);
    filter: brightness(1.1);
    transform: translateY(-1px);
}

/* ========================================
   WARNING VARIANT
   ======================================== */
.studio-btn-warning {
    background: var(--warning);
    border: none;
    color: white;
}

.studio-btn-warning:hover:not(:disabled) {
    background: var(--warning);
    filter: brightness(1.1);
    transform: translateY(-1px);
}

/* ========================================
   ICON BUTTONS
   ======================================== */
.studio-btn-icon {
    width: 44px;  /* Minimum touch target */
    height: 44px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
}

.studio-btn-icon-sm {
    width: 36px;
    height: 36px;
}

/* Icon spacing when combined with text */
.studio-btn i {
    margin-right: var(--space-sm);
}

.studio-btn i:only-child {
    margin-right: 0;
}

/* ========================================
   BUTTON GROUPS
   ======================================== */
.studio-btn-group {
    display: inline-flex;
    gap: var(--space-sm);
}

.studio-btn-group .studio-btn {
    flex: 1;
}

/* ========================================
   LOADING STATE
   ======================================== */
.studio-btn-loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.studio-btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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