/* =========================================
   UI Components
   ========================================= */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-family: var(--font-family-header);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
}

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.btn-outline:hover {
    border-color: var(--text-primary);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
}

/* Cards (Glassmorphism inspired) */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-5) var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 600;
}

/* Status Tags */
.status-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.status-active {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

.status-planning {
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--accent-info);
}

.status-risk {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--accent-danger);
}

.status-completed {
    background-color: rgba(158, 163, 176, 0.15);
    color: var(--text-secondary);
}

.status-on-hold {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--accent-warning);
}

/* Progress Bars */
.progress-container {
    width: 100%;
    height: 6px;
    background-color: var(--bg-surface-elevated);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--accent-primary);
    border-radius: var(--radius-full);
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Avatars Stack */
.avatar-stack {
    display: flex;
    align-items: center;
}

.avatar-stack .avatar-mini {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-surface);
    margin-left: -8px;
    background-color: var(--accent-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    z-index: 1;
    position: relative;
}

.avatar-stack .avatar-mini:first-child {
    margin-left: 0;
    z-index: 3;
}

.avatar-stack .avatar-mini:nth-child(2) {
    z-index: 2;
}

.avatar-stack .avatar-mini:nth-child(3) {
    z-index: 1;
}

.avatar-stack .avatar-more {
    background-color: var(--bg-surface-elevated);
    color: var(--text-secondary);
}

/* Modals / Overlays */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.modal-backdrop.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: var(--space-6);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    background-color: rgba(0, 0, 0, 0.1);
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    background-color: var(--bg-base);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    color: var(--text-primary);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary-alpha);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239ea3b0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-8);
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.tab-btn {
    padding: var(--space-3) 0;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-primary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--accent-primary);
    border-radius: 2px 2px 0 0;
}