/* ==========================================================================
   Dotto Personal Task Manager - Core Stylesheet
   Based on Section 16 Guidelines: Minimal, Clean, Productivity-Focused
   ========================================================================== */

:root {
    /* Color Palette - Specified in Section 16 */
    --bg-main: #f7f8fa;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --text-primary: #202124;
    --text-secondary: #70757a;
    --text-muted: #9aa0a6;
    --border: #e8eaed;
    --border-hover: #dadce0;

    /* Status Colors */
    --status-pending: #d69b36;
    --status-pending-bg: #fef8eb;
    --status-progress: #3988d8;
    --status-progress-bg: #eef6fd;
    --status-revision: #9568ce;
    --status-revision-bg: #f6f0fc;
    --status-completed: #279b69;
    --status-completed-bg: #edf8f3;
    --status-hold: #858585;
    --status-hold-bg: #f4f4f4;

    /* Priority Colors */
    --prio-low: #64748b;
    --prio-medium: #3b82f6;
    --prio-high: #f59e0b;
    --prio-urgent: #ef4444;

    /* Theme accents */
    --primary: #202124;
    --primary-hover: #3c4043;
    --primary-light: #f1f3f4;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;

    /* Dimensions & Spacing */
    --sidebar-width: 250px;
    --header-height: 64px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px 0 rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

/* Reset & Box Sizing */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Layout Structure */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.logo-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--text-primary);
    color: #ffffff;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-section-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0.75rem 0.75rem 0.35rem 0.75rem;
}

.nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-item:hover {
    background-color: var(--primary-light);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: #202124;
    color: #ffffff;
    font-weight: 600;
}

.nav-item-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

.nav-badge {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 10px;
    background-color: var(--primary-light);
    color: var(--text-secondary);
}

.nav-item.active .nav-badge {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.sidebar-footer {
    padding: 0.9rem 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    overflow: hidden;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #e2e8f0;
    color: #334155;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.user-info {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

/* Main Content Area */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header Navbar */
.top-navbar {
    height: var(--header-height);
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.75rem;
    position: sticky;
    top: 0;
    z-index: 90;
}

.top-navbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    color: var(--text-primary);
}

.top-navbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.telegram-status-pill {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid var(--border);
    background-color: var(--bg-card);
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.connected {
    background-color: #10b981;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.status-dot.disconnected {
    background-color: #f59e0b;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.86rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: #202124;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #3c4043;
}

.btn-outline {
    background-color: #ffffff;
    border-color: var(--border);
    color: var(--text-primary);
}

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

.btn-danger {
    background-color: #fef2f2;
    border-color: #fee2e2;
    color: #b91c1c;
}

.btn-danger:hover {
    background-color: #fee2e2;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.78rem;
}

.btn-icon {
    padding: 0.45rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-icon:hover {
    background-color: var(--primary-light);
    color: var(--text-primary);
}

/* Page Body Container */
.page-body {
    padding: 1.75rem;
    flex: 1;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-body {
    padding: 1.25rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-status-pending { background-color: var(--status-pending-bg); color: var(--status-pending); border: 1px solid #fde68a; }
.badge-status-in_progress { background-color: var(--status-progress-bg); color: var(--status-progress); border: 1px solid #bfdbfe; }
.badge-status-in_revision { background-color: var(--status-revision-bg); color: var(--status-revision); border: 1px solid #ddd6fe; }
.badge-status-completed { background-color: var(--status-completed-bg); color: var(--status-completed); border: 1px solid #a7f3d0; }
.badge-status-on_hold { background-color: var(--status-hold-bg); color: var(--status-hold); border: 1px solid #e5e7eb; }

.badge-prio-low { background-color: #f1f5f9; color: var(--prio-low); }
.badge-prio-medium { background-color: #eff6ff; color: var(--prio-medium); }
.badge-prio-high { background-color: #fffbeb; color: var(--prio-high); }
.badge-prio-urgent { background-color: #fef2f2; color: var(--prio-urgent); font-weight: 700; }

.badge-category {
    font-size: 0.72rem;
    padding: 0.18rem 0.5rem;
    border-radius: 4px;
    background-color: var(--primary-light);
    color: var(--text-secondary);
}

/* Modals & Backdrop */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(32, 33, 36, 0.45);
    backdrop-filter: blur(2px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 540px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalPop 0.2s ease;
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    background-color: var(--bg-main);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Slide Drawer for Task Details */
.drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(32, 33, 36, 0.35);
    z-index: 1100;
    display: none;
}

.drawer-backdrop.active {
    display: block;
}

.drawer {
    position: fixed;
    top: 0;
    right: -580px;
    bottom: 0;
    width: 100%;
    max-width: 540px;
    background-color: #ffffff;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
    z-index: 1200;
    display: flex;
    flex-direction: column;
    transition: right var(--transition-normal);
}

.drawer.open {
    right: 0;
}

.drawer-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #ffffff;
}

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.drawer-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    background-color: var(--bg-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Forms */
.form-group {
    margin-bottom: 1.15rem;
}

.form-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text-primary);
    background-color: #ffffff;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Toasts */
#toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.25rem;
    background: #202124;
    color: #ffffff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.86rem;
    font-weight: 500;
    animation: toastIn 0.25s ease;
}

.toast.success { background-color: #065f46; color: #ecfdf5; }
.toast.error { background-color: #991b1b; color: #fef2f2; }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}