/* ===================================
   FRAMEWORK CSS - ESTILOS REUTILIZABLES
   ===================================*/

/* ===== VARIABLES CSS ===== */
:root {
    --color-1: #000000;
    --color-2: #001F3F;
    --color-3: #3c8dbc;
    --color-4: #80b5d3;
    --color-5: #d2d6de;
    --color-6: #e2e4e9;
    --color-7: #ffffff;
    --color-8: #555555;
    --gradient-primary: linear-gradient(135deg, #001F3F 0%, #003366 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-3) 0%, var(--color-4) 100%);
    
    /* Espaciado */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 40px;
    --spacing-2xl: 60px;
    --spacing-3xl: 80px;
    
    /* Bordes */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 50px;
    
    /* Sombras */
    --shadow-sm: 0 4px 15px rgba(0,0,0,0.05);
    --shadow-md: 0 5px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0, 31, 63, 0.1);
    --shadow-xl: 0 10px 40px rgba(0, 31, 63, 0.15);
    
    /* Transiciones */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

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

body {
    font-family: 'Inter', Arial, Helvetica, sans-serif;
    background-color: var(--color-6);
    color: var(--color-1);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

/* ===== TIPOGRAFÍA ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 3em;
    color: var(--color-2);
}

h2 {
    font-size: 2rem;
    color: var(--color-2);
}

h3 {
    font-size: 1.5rem;
    color: var(--color-2);
}

h4 {
    font-size: 1.2rem;
    color: var(--color-2);
}

p {
    line-height: 1.8;
    color: var(--color-8);
}

a {
    text-decoration: none;
    transition: all var(--transition-normal);
}

/* ===== GRID SYSTEM ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.container-sm {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.container-lg {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-auto-lg {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* ===== FLEXBOX UTILITIES ===== */
.flex {
    display: flex;
}

.flex-col {
    display: flex;
    flex-direction: column;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-start {
    display: flex;
    align-items: flex-start;
}

.flex-end {
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
}

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ===== BOTONES ===== */
.btn {
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--color-7);
    box-shadow: 0 4px 15px rgba(60, 141, 188, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(60, 141, 188, 0.4);
}

.btn-secondary {
    background: var(--color-5);
    color: var(--color-2);
}

.btn-secondary:hover {
    background: var(--color-4);
    color: var(--color-7);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-3);
    color: var(--color-3);
}

.btn-outline:hover {
    background: var(--color-3);
    color: var(--color-7);
}

.btn-danger {
    background: transparent;
    border: 2px solid #dc2626;
    color: #dc2626;
}

.btn-danger:hover {
    background: #dc2626;
    color: var(--color-7);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* ===== CARDS ===== */
.card {
    background: var(--color-7);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-sm {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.card-lg {
    padding: 50px;
    border-radius: var(--radius-2xl);
}

.card-flat {
    box-shadow: none;
    border: 1px solid var(--color-5);
}

.card-bordered {
    border: 2px solid var(--color-5);
}

.card-bordered:hover {
    border-color: var(--color-3);
}

/* ===== FORMULARIOS ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.form-label {
    font-weight: 500;
    color: var(--color-2);
    font-size: 0.95rem;
}

.form-input,
.form-select,
.form-textarea {
    padding: 12px 15px;
    border: 2px solid var(--color-5);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-normal);
    background: var(--color-6);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-3);
    background: var(--color-7);
    box-shadow: 0 0 0 4px rgba(60, 141, 188, 0.1);
}

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

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 15px;
    width: 20px;
    height: 20px;
    fill: var(--color-4);
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    padding: 14px 45px;
    border: 2px solid var(--color-5);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s;
    background: var(--color-6);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--color-3);
    background: var(--color-7);
    box-shadow: 0 0 0 4px rgba(60, 141, 188, 0.1);
}

.input-wrapper input::placeholder {
    color: #999;
}

/* ===== ALERTAS Y MENSAJES ===== */
.alert {
    padding: 12px 15px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    border-left: 4px solid;
    display: none;
}

.alert.show {
    display: block;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-color: #10b981;
}

.alert-error {
    background: #fee2e2;
    color: #dc2626;
    border-color: #dc2626;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-color: #f59e0b;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-color: #3b82f6;
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-error {
    background: #fee2e2;
    color: #dc2626;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

.badge-primary {
    background: var(--color-3);
    color: var(--color-7);
}

/* ===== ESPACIADO ===== */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.ml-1 { margin-left: var(--spacing-sm); }
.ml-2 { margin-left: var(--spacing-md); }
.ml-3 { margin-left: var(--spacing-lg); }

.mr-1 { margin-right: var(--spacing-sm); }
.mr-2 { margin-right: var(--spacing-md); }
.mr-3 { margin-right: var(--spacing-lg); }

.p-0 { padding: 0; }
.pt-1 { padding-top: var(--spacing-sm); }
.pt-2 { padding-top: var(--spacing-md); }
.pt-3 { padding-top: var(--spacing-lg); }
.pt-4 { padding-top: var(--spacing-xl); }
.pt-5 { padding-top: var(--spacing-2xl); }

.pb-1 { padding-bottom: var(--spacing-sm); }
.pb-2 { padding-bottom: var(--spacing-md); }
.pb-3 { padding-bottom: var(--spacing-lg); }
.pb-4 { padding-bottom: var(--spacing-xl); }
.pb-5 { padding-bottom: var(--spacing-2xl); }

.pl-1 { padding-left: var(--spacing-sm); }
.pl-2 { padding-left: var(--spacing-md); }
.pl-3 { padding-left: var(--spacing-lg); }

.pr-1 { padding-right: var(--spacing-sm); }
.pr-2 { padding-right: var(--spacing-md); }
.pr-3 { padding-right: var(--spacing-lg); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

/* ===== TEXTO ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

.text-primary { color: var(--color-2); }
.text-secondary { color: var(--color-3); }
.text-muted { color: var(--color-8); }
.text-white { color: var(--color-7); }

.text-sm { font-size: 0.85rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.2rem; }
.text-xl { font-size: 1.5rem; }
.text-2xl { font-size: 2rem; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.italic { font-style: italic; }

/* ===== BORDES ===== */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }
.rounded-circle { border-radius: 50%; }

.border { border: 1px solid var(--color-5); }
.border-2 { border: 2px solid var(--color-5); }
.border-primary { border-color: var(--color-3); }
.border-none { border: none; }

/* ===== FONDOS ===== */
.bg-white { background-color: var(--color-7); }
.bg-light { background-color: var(--color-6); }
.bg-gray { background-color: var(--color-5); }
.bg-primary { background-color: var(--color-2); }
.bg-secondary { background-color: var(--color-3); }
.bg-gradient { background: var(--gradient-accent); }

/* ===== SOMBRAS ===== */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

/* ===== DISPLAY ===== */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* ===== POSICIÓN ===== */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* ===== OVERFLOW ===== */
.overflow-auto { overflow: auto; }
.overflow-hidden { overflow: hidden; }
.overflow-scroll { overflow: scroll; }

/* ===== WIDTH & HEIGHT ===== */
.w-full { width: 100%; }
.w-auto { width: auto; }
.h-full { height: 100%; }
.h-auto { height: auto; }

.max-w-sm { max-width: 600px; }
.max-w-md { max-width: 900px; }
.max-w-lg { max-width: 1200px; }
.max-w-xl { max-width: 1400px; }

/* ===== TRANSICIONES ===== */
.transition { transition: all var(--transition-normal); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-shadow:hover {
    box-shadow: var(--shadow-xl);
}

/* ===== LISTAS ===== */
.list-none { list-style: none; }
.list-disc { list-style: disc; }
.list-decimal { list-style: decimal; }

/* ===== CURSOR ===== */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .container, .container-lg {
        padding: 0 var(--spacing-lg);
    }
}

@media (max-width: 900px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .md-hide { display: none; }
    .md-show { display: block; }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 20px;
        --spacing-2xl: 40px;
        --spacing-3xl: 60px;
    }
    
    h1 { font-size: 2.5em; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.3rem; }
    
    .container, .container-sm, .container-lg {
        padding: 0 var(--spacing-lg);
    }
    
    .grid-auto, .grid-auto-lg {
        grid-template-columns: 1fr;
    }
    
    .sm-hide { display: none; }
    .sm-show { display: block; }
    
    .sm-text-center { text-align: center; }
}

@media (max-width: 480px) {
    .xs-hide { display: none; }
    .xs-show { display: block; }
}