@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #d90429;
    --primary-hover: #ef233c;
    --accent: #ffd100;
    --accent-hover: #ffc300;
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --bg-success: #dcfce7;
    --text-success: #166534;
    --border-success: #86efac;
    
    --bg-error: #fee2e2;
    --text-error: #b91c1c;
    --border-error: #fca5a5;

    --bg-warning: #fef9c3;
    --text-warning: #854d0e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
}

/* ================== LOGIN PAGE ================== */
.login-body {
    background: linear-gradient(135deg, var(--primary) 0%, #8c0016 100%);
    align-items: center;
    justify-content: center;
}

.login-container {
    background: var(--bg-surface);
    width: 100%;
    max-width: 440px;
    padding: 3rem 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border-top: 8px solid var(--accent);
    animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    margin: 1rem;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo img {
    width: 120px;
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.025em;
}

.logo h1 span {
    color: var(--accent);
}

.auth-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

/* ================== FORMS & INPUTS ================== */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="number"],
input[type="time"],
select,
textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: var(--bg-body);
    color: var(--text-main);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(255, 209, 0, 0.15);
    background-color: var(--bg-surface);
}

.actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

.actions label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0;
    font-weight: 500;
    cursor: pointer;
}

.actions input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--primary);
}

.actions a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.actions a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

button {
    width: 100%;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

button[type="submit"].btn-primary,
button.create {
    background: var(--accent);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

button[type="submit"].btn-primary:hover,
button.create:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

button.delete {
    background: var(--bg-error);
    color: var(--text-error);
    width: auto;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}
button.delete:hover {
    background: var(--border-error);
}

button.approve {
    background: var(--bg-success);
    color: var(--text-success);
    width: auto;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}
button.approve:hover {
    background: var(--border-success);
}

button.reject {
    background: var(--bg-warning);
    color: var(--text-warning);
    width: auto;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}
button.reject:hover {
    background: #fde047;
}

.error-banner {
    background: var(--bg-error);
    color: var(--text-error);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    text-align: center;
    border: 1px solid var(--border-error);
    animation: slideDown 0.3s ease-out;
    font-size: 0.95rem;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ================== DASHBOARD LAYOUT ================== */
.dashboard-body {
    flex-direction: row;
    height: 100vh;
    overflow: hidden;
}

nav {
    width: 260px;
    background: var(--primary);
    color: white;
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.nav-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

.nav-header img {
    width: 140px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    transition: all 0.2s ease;
    font-size: 1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

nav a:hover,
nav a.active {
    background: var(--accent);
    color: var(--text-main);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

nav a svg {
    width: 20px;
    height: 20px;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    background-color: var(--bg-body);
}

.topbar {
    background: var(--bg-surface);
    padding: 1.25rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    z-index: 5;
    position: sticky;
    top: 0;
}

.topbar h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.025em;
}

.logout-btn {
    text-decoration: none;
    color: var(--text-main);
    background: var(--bg-body);
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.logout-btn:hover {
    background: var(--bg-error);
    color: var(--text-error);
    border-color: var(--border-error);
}

.content-wrapper {
    padding: 2.5rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.content-card {
    background: var(--bg-surface);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border-top: 6px solid var(--accent);
    animation: fadeUp 0.4s ease-out;
}

.content-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.mb-4 { margin-bottom: 1rem; }

/* ================== TABLES ================== */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    background: var(--bg-surface);
    margin-top: 1.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

th, td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

th {
    background: var(--bg-body);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

tbody tr {
    transition: background-color 0.2s;
}

tbody tr:hover {
    background-color: var(--bg-body);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* ================== BADGES & ALERTS ================== */
.status-badge {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-pending { background: var(--bg-warning); color: var(--text-warning); }
.status-approved { background: var(--bg-success); color: var(--text-success); }
.status-rejected { background: var(--bg-error); color: var(--text-error); }

.message {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.message.success { background: var(--bg-success); color: var(--text-success); border: 1px solid var(--border-success); }
.message.error { background: var(--bg-error); color: var(--text-error); border: 1px solid var(--border-error); }

/* ================== MODALS ================== */
.overlay, .meeting-overlay, .rejection-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.modal {
    background: var(--bg-surface);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-xl);
    position: relative;
    border-top: 6px solid var(--primary);
    animation: scaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    background: var(--bg-body);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s;
    font-size: 1.25rem;
    line-height: 1;
}

.modal-close:hover {
    background: var(--bg-error);
    color: var(--text-error);
}

.modal h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    padding-right: 2rem;
}

/* ================== RESPONSIVE DESIGN ================== */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-main);
    cursor: pointer;
}

@media (max-width: 1024px) {
    .content-wrapper {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .dashboard-body {
        flex-direction: column;
    }

    .topbar {
        padding: 1rem;
    }

    .menu-toggle {
        display: block;
    }

    nav {
        position: fixed;
        left: -100%;
        top: 0;
        height: 100%;
        width: 280px;
        transition: left 0.3s ease;
        z-index: 100;
        box-shadow: var(--shadow-xl);
    }

    nav.open {
        left: 0;
    }

    .nav-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }

    .nav-overlay.open {
        display: block;
    }

    main {
        padding-top: 0;
    }

    .content-card {
        padding: 1.5rem;
        border-radius: var(--radius-md);
    }
    
    .table-container {
        border: none;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 2rem 1.5rem;
    }

    th, td {
        padding: 0.75rem 1rem;
    }

    .actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

/* ================== FULLCALENDAR (PREMIUM PLANNING) ================== */
.fc.fc-media-screen {
    --fc-border-color: #f1f5f9;
    --fc-page-bg-color: transparent;
    --fc-neutral-bg-color: #f8fafc;
    --fc-today-bg-color: #fffbeb;
    
    --fc-button-bg-color: #ffffff;
    --fc-button-border-color: #e2e8f0;
    --fc-button-text-color: #475569;
    --fc-button-hover-bg-color: #f8fafc;
    --fc-button-hover-border-color: #cbd5e1;
    --fc-button-active-bg-color: var(--primary);
    --fc-button-active-border-color: var(--primary);
    
    font-family: inherit;
}

.fc .fc-toolbar.fc-header-toolbar {
    margin-bottom: 2rem !important;
}

.fc .fc-toolbar-title {
    font-size: 1.5rem !important;
    font-weight: 700 !important;
    color: var(--text-main);
}

.fc .fc-button {
    font-weight: 600 !important;
    text-transform: capitalize !important;
    padding: 0.6rem 1.2rem !important;
    border-radius: 9999px !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05) !important;
    transition: all 0.2s !important;
}

.fc .fc-button-primary:not(:disabled):active,
.fc .fc-button-primary:not(:disabled).fc-button-active {
    color: white !important;
    box-shadow: 0 4px 6px rgba(217, 4, 41, 0.25) !important;
}

.fc-theme-standard .fc-scrollgrid {
    border-radius: var(--radius-xl) !important;
    overflow: hidden !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.03);
    background: white;
}

.fc-theme-standard td, .fc-theme-standard th {
    border-color: #f1f5f9 !important;
}

.fc-col-header-cell-cushion {
    color: var(--text-muted) !important;
    font-weight: 600 !important;
    text-transform: uppercase !important;
    font-size: 0.75rem !important;
    letter-spacing: 0.05em;
    padding: 1rem 0 !important;
}

.fc-daygrid-day-number {
    color: var(--text-main) !important;
    font-weight: 600 !important;
    font-size: 0.9rem !important;
    padding: 0.75rem !important;
}

.fc-day-today {
    background: linear-gradient(135deg, rgba(255, 209, 0, 0.05) 0%, rgba(255, 209, 0, 0.15) 100%) !important;
}

.fc-h-event {
    background-color: var(--primary) !important;
    border: none !important;
    border-radius: 6px !important;
    padding: 4px 8px !important;
    margin: 2px 6px !important;
    box-shadow: 0 2px 4px rgba(217, 4, 41, 0.2) !important;
    transition: all 0.2s ease !important;
}

.fc-h-event:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 8px rgba(217, 4, 41, 0.3) !important;
}

.fc-event-title, .fc-event-time {
    font-weight: 600 !important;
    font-size: 0.75rem !important;
}

#calendar {
    padding-top: 1rem;
}