/* Custom Properties & Design Tokens */
:root {
    --bg-base: #0b0f19;
    --bg-surface: #131b2e;
    --bg-surface-hover: #1e294b;
    --bg-surface-active: #23315a;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Brand & Accent Colors */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.15);
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --success-border: rgba(16, 185, 129, 0.2);
    
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --warning-border: rgba(245, 158, 11, 0.2);
    
    --info: #0ea5e9;
    --info-bg: rgba(14, 165, 233, 0.1);
    --info-border: rgba(14, 165, 233, 0.2);
    
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-border: rgba(239, 68, 68, 0.2);
    
    --muted-badge-bg: rgba(100, 116, 139, 0.1);
    --muted-badge-border: rgba(100, 116, 139, 0.2);
    
    /* Typography */
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    /* Shadows & Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px 0 rgba(99, 102, 241, 0.15);
    
    /* Layout */
    --sidebar-width: 260px;
    --header-height: 80px;
    --border-radius: 14px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-surface-hover);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--bg-surface-active);
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--info));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-glow);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-item i {
    width: 20px;
    height: 20px;
}

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

.nav-item.active {
    color: white;
    background-color: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.sidebar-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #ec4899, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 600;
    color: white;
}

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

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 40px;
    min-width: 0; /* Prevents flex overflow */
}

/* Header */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.header-title h1 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.header-title p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
    font-size: 14px;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

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

.btn-secondary:hover {
    background-color: var(--bg-surface-active);
    border-color: var(--border-color-hover);
}

.btn i {
    width: 18px;
    height: 18px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition-normal);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    width: 24px;
    height: 24px;
}

.icon-blue { background-color: var(--info-bg); color: var(--info); }
.icon-yellow { background-color: var(--warning-bg); color: var(--warning); }
.icon-green { background-color: var(--success-bg); color: var(--success); }
.icon-red { background-color: var(--danger-bg); color: var(--danger); }

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    margin-top: 2px;
}

/* Cards & Layout */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.card-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 260px;
}

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 18px;
    height: 18px;
}

.search-box input {
    width: 100%;
    background-color: var(--bg-base);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 14px 10px 42px;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: 14px;
    transition: var(--transition-fast);
}

.search-box input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.select-box select {
    background-color: var(--bg-base);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 36px 10px 14px;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: 14px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19.5 8.25l-7.5 7.5-7.5-7.5' /%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    transition: var(--transition-fast);
}

.select-box select:focus {
    border-color: var(--primary);
    outline: none;
}

/* Data Table */
.table-container {
    overflow-x: auto;
    width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: rgba(255, 255, 255, 0.01);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.05em;
}

.data-table tbody tr {
    transition: var(--transition-fast);
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.015);
}

.text-right {
    text-align: right;
}

/* Client Table Row Styles */
.client-name-cell {
    display: flex;
    flex-direction: column;
}

.client-name-text {
    font-weight: 600;
    color: var(--text-primary);
}

.client-date-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-sin_contactar { background-color: var(--muted-badge-bg); color: var(--text-secondary); border: 1px solid var(--muted-badge-border); }
.badge-esperando_respuesta { background-color: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-contactado { background-color: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.badge-sin_respuesta { background-color: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.badge-perdido { background-color: rgba(239, 68, 68, 0.05); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.1); text-decoration: line-through; }

.badge-priority-alta { background-color: rgba(239, 68, 68, 0.15); color: #f87171; }
.badge-priority-media { background-color: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.badge-priority-baja { background-color: rgba(14, 165, 233, 0.15); color: #38bdf8; }

/* Links Cell */
.links-flex {
    display: flex;
    gap: 8px;
}

.link-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background-color: var(--bg-base);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
    text-decoration: none;
}

.link-btn:hover {
    color: white;
    border-color: var(--primary);
    background-color: var(--bg-surface-hover);
    transform: translateY(-1px);
}

.link-btn i {
    width: 16px;
    height: 16px;
}

/* Action Buttons */
.action-btn {
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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

.action-btn-danger:hover {
    background-color: var(--danger-bg);
    color: var(--danger);
}

.action-btn i {
    width: 16px;
    height: 16px;
}

/* Loading & Empty States */
.table-loading,
.table-empty {
    text-align: center;
    color: var(--text-secondary);
}

.table-loading td,
.table-empty td {
    padding: 60px 0;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    margin: 0 auto 12px;
    animation: spin 1s linear infinite;
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

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

.modal-backdrop {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgba(4, 6, 10, 0.8);
    backdrop-filter: blur(8px);
}

.modal-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 1001;
    transform: translateY(20px);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

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

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.btn-close:hover {
    background-color: var(--bg-surface-hover);
    color: white;
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

input[type="text"],
input[type="url"],
input[type="date"],
select,
textarea {
    width: 100%;
    background-color: var(--bg-base);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 14px;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: 14px;
    transition: var(--transition-fast);
}

input[type="text"]:focus,
input[type="url"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.links-input-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.link-input-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.link-type-icon {
    width: 20px;
    color: var(--text-muted);
}

/* Responsive Rules */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
        padding: 20px 10px;
    }
    .sidebar-brand span,
    .nav-item span,
    .user-info {
        display: none;
    }
    .sidebar-brand {
        justify-content: center;
        margin-bottom: 30px;
    }
    .nav-item {
        justify-content: center;
        padding: 12px;
    }
    .main-content {
        margin-left: 80px;
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 16px 24px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    .sidebar-brand {
        margin-bottom: 0;
    }
    .sidebar-nav {
        flex-direction: row;
        gap: 16px;
    }
    .sidebar-footer {
        display: none;
    }
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    .header-actions {
        width: 100%;
    }
    .btn {
        width: 100%;
    }
}