/* ===== VARIABLES DE COLORES ===== */
:root {
    --color-primary: #2196F3;
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-danger: #E91E63;
    --color-purple: #9C27B0;
    --color-dark: #263238;
    --color-gray: #757575;
    --color-light-gray: #E0E0E0;
    --color-bg: #F5F7FA;
    --color-white: #FFFFFF;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
}

/* ===== RESET Y ESTILOS GENERALES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-dark);
    line-height: 1.6;
}

/* ===== PÁGINA DE LOGIN ===== */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-purple) 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: var(--color-white);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.login-box h1 {
    font-size: 32px;
    color: var(--color-primary);
    margin-bottom: 8px;
    text-align: center;
}

.login-box .subtitle {
    text-align: center;
    color: var(--color-gray);
    margin-bottom: 30px;
    font-size: 14px;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--color-light-gray);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--color-gray);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s;
}

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

/* ===== FORMULARIOS ===== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-dark);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-light-gray);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

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

/* ===== BOTONES ===== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    width: 100%;
    justify-content: center;
}

.btn-primary:hover {
    background: #1976D2;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-success:hover {
    background: #388E3C;
}

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

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

.btn-secondary {
    background: var(--color-light-gray);
    color: var(--color-dark);
}

/* ===== ALERTAS ===== */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
    border-left: 4px solid var(--color-danger);
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background: #FFF3E0;
    color: #E65100;
    border-left: 4px solid var(--color-warning);
}

.login-info {
    margin-top: 20px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--color-light-gray);
}

.login-info p {
    color: var(--color-gray);
}

/* ===== NAVBAR ===== */
.navbar {
    background: var(--color-white);
    box-shadow: var(--shadow);
    padding: 0 30px;
    display: flex;
    align-items: center;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    margin-right: 40px;
}

.navbar-menu {
    display: flex;
    gap: 30px;
    align-items: center;
    flex: 1;
}

.navbar-menu a {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s;
}

.navbar-menu a:hover {
    color: var(--color-primary);
}

.navbar-menu a.active {
    color: var(--color-primary);
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-left: auto;
}

.settings-dropdown {
    position: relative;
}

.settings-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 24px;
    color: var(--color-gray);
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s;
}

.settings-btn:hover {
    background: var(--color-bg);
    color: var(--color-primary);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-hover);
    border-radius: 8px;
    min-width: 200px;
    margin-top: 10px;
    display: none;
    z-index: 1000;
}

.dropdown-menu.show {
    display: block;
    animation: slideDown 0.3s;
}

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

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--color-dark);
    text-decoration: none;
    transition: background 0.3s;
}

.dropdown-menu a:hover {
    background: var(--color-bg);
    color: var(--color-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

/* ===== CONTAINER PRINCIPAL ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px;
}

.page-header {
    margin-bottom: 30px;
}

.page-header h2 {
    font-size: 28px;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.page-header p {
    color: var(--color-gray);
}

/* ===== KANBAN BOARD ===== */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.kanban-column {
    background: var(--color-white);
    border-radius: 12px;
    padding: 20px;
    min-height: 500px;
}

.kanban-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 3px solid;
}

.kanban-column.pendiente .kanban-header {
    border-color: var(--color-gray);
}

.kanban-column.en-progreso .kanban-header {
    border-color: var(--color-primary);
}

.kanban-column.en-revision .kanban-header {
    border-color: var(--color-warning);
}

.kanban-column.publicado .kanban-header {
    border-color: var(--color-success);
}

.kanban-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
}

.kanban-count {
    background: var(--color-light-gray);
    color: var(--color-dark);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
}

.kanban-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.kanban-card {
    background: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: 8px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s;
}

.kanban-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.card-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.badge-tipo {
    background: var(--color-bg);
    color: var(--color-dark);
}

.card-date {
    color: var(--color-gray);
    font-size: 13px;
    margin-top: 8px;
}

/* ===== AVATAR DE USUARIO ===== */
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.user-avatar:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.user-avatar::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: var(--color-dark);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.user-avatar:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

/* Flecha del tooltip */
.user-avatar::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(2px);
    border: 6px solid transparent;
    border-top-color: var(--color-dark);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
}

.user-avatar:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(-2px);
}

/* ===== CALENDARIO ===== */
.calendar-container {
    background: var(--color-white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    max-width: 100%;
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.calendar-header h3 {
    font-size: 24px;
    color: var(--color-dark);
}

.calendar-nav {
    display: flex;
    gap: 10px;
}

.calendar-nav button {
    padding: 8px 16px;
    background: var(--color-bg);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.calendar-nav button:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    width: 100%;
}

.calendar-day-header {
    text-align: center;
    font-weight: 600;
    padding: 10px 4px;
    color: var(--color-gray);
    font-size: 13px;
}

.calendar-day {
    min-height: 100px;
    max-height: 120px;
    border: 2px solid var(--color-light-gray);
    border-radius: 8px;
    padding: 6px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.calendar-day:hover {
    border-color: var(--color-primary);
    background: rgba(33, 150, 243, 0.05);
}

.calendar-day.other-month {
    opacity: 0.3;
}

.calendar-day.today {
    border-color: var(--color-primary);
    background: rgba(33, 150, 243, 0.1);
}

.day-number {
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
    font-size: 14px;
    flex-shrink: 0;
}

.day-events {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: 4px;
    overflow-y: auto;
    flex: 1;
}

.day-events::-webkit-scrollbar {
    width: 4px;
}

.day-events::-webkit-scrollbar-thumb {
    background: var(--color-light-gray);
    border-radius: 2px;
}

.day-events::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray);
}

.event-item {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.event-item:hover {
    transform: translateX(2px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.event-dot {
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--color-primary);
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: 16px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}

@keyframes slideUp {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-size: 24px;
    color: var(--color-dark);
    margin: 0;
}

.modal-close,
.close-modal {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--color-gray);
    cursor: pointer;
    line-height: 1;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.2s ease;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover,
.close-modal:hover {
    background: var(--color-bg);
    color: var(--color-danger);
}

.modal-body {
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-light-gray);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0 15px;
    }
    
    .navbar-menu {
        gap: 15px;
    }
    
    .kanban-board {
        grid-template-columns: 1fr;
    }
    
    .calendar-container {
        padding: 15px;
    }
    
    .calendar-grid {
        gap: 4px;
    }
    
    .calendar-day {
        padding: 4px;
        min-height: 80px;
        max-height: 100px;
    }
    
    .calendar-day-header {
        font-size: 11px;
        padding: 8px 2px;
    }
    
    .day-number {
        font-size: 12px;
    }
    
    .modal-content {
        width: 95%;
    }
}