/* ============================================================
   BravoCollab - Main Stylesheet
   ============================================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary: #0079BF;
    --color-primary-dark: #026AA7;
    --color-primary-light: #E4F0F6;
    --color-danger: #EB5A46;
    --color-success: #61BD4F;
    --color-warning: #F2D600;
    --color-bg: #f4f5f7;
    --color-bg-dark: #091E42;
    --color-text: #172b4d;
    --color-text-light: #6b778c;
    --color-border: #dfe1e6;
    --color-white: #ffffff;
    --color-card: #ffffff;
    --shadow-sm: 0 1px 2px rgba(9,30,66,0.08);
    --shadow-md: 0 4px 8px rgba(9,30,66,0.12);
    --shadow-lg: 0 8px 24px rgba(9,30,66,0.16);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html, body {
    height: 100%;
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ---- Navbar ---- */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 48px;
    padding: 0 16px;
    background: var(--color-bg-dark);
    color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    color: var(--color-white);
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.navbar-brand:hover {
    text-decoration: none;
    opacity: 0.9;
}

.navbar-left, .navbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link {
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    text-decoration: none;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.nav-link:hover {
    color: var(--color-white);
    background: rgba(255,255,255,0.1);
    text-decoration: none;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-name {
    font-size: 13px;
    opacity: 0.8;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s, opacity 0.15s;
    text-decoration: none;
    line-height: 1.4;
}

.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

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

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-dark);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--color-border);
}

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

.btn-danger:hover:not(:disabled) {
    background: #CF513D;
}

.btn-text {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    font-size: 13px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.btn-text:hover {
    color: var(--color-white);
    background: rgba(255,255,255,0.1);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
    color: var(--color-text-light);
    transition: background 0.15s;
}

.btn-icon:hover {
    background: rgba(9,30,66,0.08);
    color: var(--color-text);
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 8px 12px;
    font-size: 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color 0.15s;
    font-family: var(--font-family);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group input:disabled {
    background: var(--color-bg);
    color: var(--color-text-light);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-error {
    display: none;
    color: var(--color-danger);
    background: #FFF4F4;
    border: 1px solid #FFCDD2;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 12px;
}

/* ---- Main Content ---- */
.main-content {
    padding: 24px;
    min-height: calc(100vh - 48px);
}

/* ---- Notifications ---- */
.notification-bell {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: var(--radius-sm);
}

.notification-bell:hover {
    background: rgba(255,255,255,0.1);
}

.notification-bell svg {
    color: rgba(255,255,255,0.8);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -4px;
    background: var(--color-danger);
    color: var(--color-white);
    font-size: 10px;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    border-radius: 8px;
    padding: 0 4px;
}

.notification-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    width: 360px;
    max-height: 480px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 200;
    margin-top: 8px;
}

.notification-dropdown.open {
    display: block;
}

.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
}

.notification-header h3 {
    font-size: 14px;
    color: var(--color-text);
    margin: 0;
}

.notification-header .btn-text {
    color: var(--color-primary);
    font-size: 12px;
}

.notification-list {
    overflow-y: auto;
    max-height: 420px;
}

.notification-item {
    display: flex;
    gap: 10px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--color-bg);
    cursor: pointer;
    transition: background 0.1s;
}

.notification-item:hover {
    background: var(--color-bg);
}

.notification-item.unread {
    background: var(--color-primary-light);
}

.notification-item .notif-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-item .notif-content {
    flex: 1;
    min-width: 0;
}

.notification-item .notif-text {
    font-size: 13px;
    color: var(--color-text);
    line-height: 1.4;
}

.notification-item .notif-time {
    font-size: 11px;
    color: var(--color-text-light);
    margin-top: 2px;
}

.notification-empty {
    text-align: center;
    color: var(--color-text-light);
    padding: 32px 16px;
    font-size: 13px;
}

/* ---- Toast Notifications ---- */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-size: 14px;
    box-shadow: var(--shadow-md);
    animation: toast-in 0.3s ease;
    max-width: 360px;
}

.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-danger); }
.toast.info { background: var(--color-primary); }

.toast.removing {
    animation: toast-out 0.3s ease forwards;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toast-out {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(16px); }
}

/* ---- Avatar ---- */
.avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

.avatar-sm { width: 24px; height: 24px; font-size: 10px; }
.avatar-lg { width: 36px; height: 36px; font-size: 14px; }

.avatar-stack {
    display: flex;
}

.avatar-stack .avatar {
    margin-left: -6px;
    border: 2px solid var(--color-white);
}

.avatar-stack .avatar:first-child {
    margin-left: 0;
}

/* ---- Utility ---- */
.text-muted { color: var(--color-text-light); }
.text-danger { color: var(--color-danger); }
.text-sm { font-size: 12px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-4 { gap: 4px; }

/* ---- Loading spinner ---- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ---- Empty state ---- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--color-text-light);
}

.empty-state h3 {
    font-size: 18px;
    color: var(--color-text);
    margin-bottom: 8px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .main-content {
        padding: 16px;
    }

    .navbar {
        padding: 0 12px;
    }

    .notification-dropdown {
        width: calc(100vw - 24px);
        right: -8px;
    }
}