/**
 * 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 technical aesthetic with refined interactions
   ======================================== */

/* Base nav button - sleek, minimal, technical */
.studio-btn-nav {
    background: linear-gradient(180deg,
        rgba(255,255,255,0.08) 0%,
        rgba(255,255,255,0.03) 100%);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.85);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.01em;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow:
        0 1px 2px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.05);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
}

/* Subtle glow line on top */
.studio-btn-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        rgba(255,255,255,0.2),
        transparent);
    opacity: 0;
    transition: opacity 0.2s ease;
}

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

.studio-btn-nav:hover:not(:disabled) {
    background: linear-gradient(180deg,
        rgba(255,255,255,0.12) 0%,
        rgba(255,255,255,0.06) 100%);
    border-color: rgba(255,255,255,0.2);
    color: #fff;
    transform: translateY(-1px);
    box-shadow:
        0 4px 12px rgba(0,0,0,0.3),
        0 1px 2px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.08);
}

.studio-btn-nav:active:not(:disabled) {
    transform: translateY(0);
    background: linear-gradient(180deg,
        rgba(255,255,255,0.05) 0%,
        rgba(255,255,255,0.02) 100%);
    box-shadow:
        0 1px 2px rgba(0,0,0,0.2),
        inset 0 1px 3px rgba(0,0,0,0.1);
}

/* Navbar context - ensure consistency */
.navbar-dark .navbar-nav .studio-btn-nav,
.navbar .studio-btn-nav {
    background: linear-gradient(180deg,
        rgba(255,255,255,0.08) 0%,
        rgba(255,255,255,0.03) 100%);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.85);
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    white-space: nowrap;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow:
        0 1px 2px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.05);
}

.navbar-dark .navbar-nav .studio-btn-nav:hover:not(:disabled),
.navbar .studio-btn-nav:hover:not(:disabled) {
    background: linear-gradient(180deg,
        rgba(255,255,255,0.12) 0%,
        rgba(255,255,255,0.06) 100%);
    border-color: rgba(255,255,255,0.2);
    color: #fff;
    transform: translateY(-1px);
    box-shadow:
        0 4px 12px rgba(0,0,0,0.3),
        0 1px 2px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.08);
}

.navbar-dark .navbar-nav .studio-btn-nav:active:not(:disabled),
.navbar .studio-btn-nav:active:not(:disabled) {
    transform: translateY(0);
    background: linear-gradient(180deg,
        rgba(255,255,255,0.05) 0%,
        rgba(255,255,255,0.02) 100%);
}

/* Icon styling - refined */
.studio-btn-nav i {
    font-size: 12px;
    opacity: 0.7;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

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

.navbar-dark .navbar-nav .studio-btn-nav i,
.navbar .studio-btn-nav i {
    font-size: 12px;
    opacity: 0.7;
}

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

/* ========================================
   ADMIN NAV BUTTON - Cyan accent variant
   ======================================== */
.studio-btn-nav-admin,
.navbar-dark .navbar-nav .studio-btn-nav-admin,
.navbar .studio-btn-nav-admin {
    background: linear-gradient(180deg,
        rgba(0,212,255,0.12) 0%,
        rgba(0,212,255,0.04) 100%);
    border: 1px solid rgba(0,212,255,0.25);
    color: rgba(0,212,255,0.9);
}

.studio-btn-nav-admin::before,
.navbar .studio-btn-nav-admin::before {
    background: linear-gradient(90deg,
        transparent,
        rgba(0,212,255,0.4),
        transparent);
}

.studio-btn-nav-admin:hover,
.navbar-dark .navbar-nav .studio-btn-nav-admin:hover,
.navbar .studio-btn-nav-admin:hover {
    background: linear-gradient(180deg,
        rgba(0,212,255,0.18) 0%,
        rgba(0,212,255,0.08) 100%);
    border-color: rgba(0,212,255,0.4);
    color: #00d4ff;
    box-shadow:
        0 4px 16px rgba(0,212,255,0.2),
        0 1px 2px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(0,212,255,0.1);
}

/* Dropdown toggle caret - custom styled */
.studio-btn-nav.dropdown-toggle::after {
    display: inline-block;
    margin-left: 6px;
    vertical-align: middle;
    content: "";
    border: none;
    width: 8px;
    height: 8px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%23fff' fill-opacity='0.6' d='M2 4l4 4 4-4z'/%3E%3C/svg%3E") center/contain no-repeat;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0.6;
}

.studio-btn-nav.dropdown-toggle:hover::after {
    opacity: 1;
}

.studio-btn-nav.dropdown-toggle.show::after {
    transform: rotate(180deg);
}

.studio-btn-nav-admin.dropdown-toggle::after {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%2300d4ff' fill-opacity='0.7' d='M2 4l4 4 4-4z'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ========================================
   ADMIN DROPDOWN MENU - Premium dark panel
   ======================================== */
.navbar .dropdown-menu,
.dropdown-menu-dark {
    background: linear-gradient(180deg,
        rgba(20,20,28,0.98) 0%,
        rgba(12,12,18,0.98) 100%);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 6px;
    min-width: 200px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow:
        0 20px 50px rgba(0,0,0,0.5),
        0 8px 20px rgba(0,0,0,0.3),
        inset 0 1px 0 rgba(255,255,255,0.05);
    animation: dropdownFadeIn 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top right;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-4px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Dropdown items - clean, spacious */
.navbar .dropdown-menu .dropdown-item,
.dropdown-menu-dark .dropdown-item {
    color: rgba(255,255,255,0.7);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 450;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.15s ease;
    position: relative;
    margin: 2px 0;
}

.navbar .dropdown-menu .dropdown-item i,
.dropdown-menu-dark .dropdown-item i {
    width: 16px;
    text-align: center;
    font-size: 12px;
    opacity: 0.6;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.navbar .dropdown-menu .dropdown-item:hover,
.dropdown-menu-dark .dropdown-item:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
}

.navbar .dropdown-menu .dropdown-item:hover i,
.dropdown-menu-dark .dropdown-item:hover i {
    opacity: 1;
    transform: scale(1.1);
}

/* Active state for current page */
.navbar .dropdown-menu .dropdown-item.active,
.dropdown-menu-dark .dropdown-item.active {
    background: linear-gradient(90deg,
        rgba(0,212,255,0.12) 0%,
        rgba(0,212,255,0.04) 100%);
    color: #00d4ff;
}

.navbar .dropdown-menu .dropdown-item.active i,
.dropdown-menu-dark .dropdown-item.active i {
    opacity: 1;
    color: #00d4ff;
}

/* Dropdown divider - subtle */
.navbar .dropdown-menu .dropdown-divider,
.dropdown-menu-dark .dropdown-divider {
    border-color: rgba(255,255,255,0.06);
    margin: 6px 10px;
}

/* Focus states for accessibility */
.navbar .dropdown-menu .dropdown-item:focus,
.dropdown-menu-dark .dropdown-item:focus {
    background: rgba(255,255,255,0.08);
    color: #fff;
    outline: none;
    box-shadow: inset 0 0 0 1px rgba(0,212,255,0.3);
}

/* ========================================
   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); }
}