/**
 * ALYSA CLOUD - Material Design 3 System
 * Implementación de Material Design para componentes UI
 */

/* ===== VARIABLES DE MATERIAL DESIGN ===== */
:root {
    /* Colores primarios Material Design */
    --md-primary: #1976d2;
    --md-primary-variant: #1565c0;
    --md-secondary: #ff5722;
    --md-secondary-variant: #e64a19;
    
    /* Superficie y fondo */
    --md-surface: #ffffff;
    --md-surface-variant: #f5f5f5;
    --md-background: #fafafa;
    --md-surface-tint: rgba(25, 118, 210, 0.05);
    
    /* Texto sobre colores */
    --md-on-primary: #ffffff;
    --md-on-secondary: #ffffff;
    --md-on-surface: #1c1b1f;
    --md-on-surface-variant: #49454f;
    --md-on-background: #1c1b1f;
    
    /* Estados */
    --md-state-hover: rgba(25, 118, 210, 0.08);
    --md-state-focus: rgba(25, 118, 210, 0.12);
    --md-state-pressed: rgba(25, 118, 210, 0.16);
    --md-state-selected: rgba(25, 118, 210, 0.12);
    
    /* Elevaciones */
    --md-elevation-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --md-elevation-2: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    --md-elevation-3: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
    --md-elevation-4: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
    --md-elevation-5: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
    
    /* Radios de borde */
    --md-corner-none: 0px;
    --md-corner-small: 4px;
    --md-corner-medium: 8px;
    --md-corner-large: 16px;
    --md-corner-extra-large: 28px;
    
    /* Espaciado */
    --md-spacing-xs: 4px;
    --md-spacing-sm: 8px;
    --md-spacing-md: 16px;
    --md-spacing-lg: 24px;
    --md-spacing-xl: 32px;
    --md-spacing-xxl: 48px;
    
    /* Transiciones */
    --md-motion-duration-short: 150ms;
    --md-motion-duration-medium: 250ms;
    --md-motion-duration-long: 300ms;
    --md-motion-easing-standard: cubic-bezier(0.2, 0.0, 0, 1.0);
    --md-motion-easing-decelerate: cubic-bezier(0.0, 0.0, 0.2, 1.0);
    --md-motion-easing-accelerate: cubic-bezier(0.4, 0.0, 1, 1.0);
}

/* ===== BOTONES MATERIAL ===== */
.md-button,
.btn-primary,
.btn-secondary,
.btn-outlined,
.btn-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-sm);
    padding: 10px 24px;
    border: none;
    border-radius: var(--md-corner-large);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 0.1px;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--md-motion-duration-short) var(--md-motion-easing-standard);
    position: relative;
    overflow: hidden;
    user-select: none;
    vertical-align: middle;
}

.md-button::before,
.btn-primary::before,
.btn-secondary::before,
.btn-outlined::before,
.btn-text::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: currentColor;
    opacity: 0;
    transition: opacity var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

/* Botón primario */
.btn-primary {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
    box-shadow: var(--md-elevation-1);
}

.btn-primary:hover::before {
    opacity: 0.08;
}

.btn-primary:focus::before {
    opacity: 0.12;
}

.btn-primary:active::before {
    opacity: 0.16;
}

.btn-primary:hover {
    box-shadow: var(--md-elevation-2);
}

/* Botón secundario */
.btn-secondary {
    background-color: var(--md-secondary);
    color: var(--md-on-secondary);
    box-shadow: var(--md-elevation-1);
}

.btn-secondary:hover::before {
    opacity: 0.08;
}

.btn-secondary:hover {
    box-shadow: var(--md-elevation-2);
}

/* Botón outlined */
.btn-outlined {
    background-color: transparent;
    color: var(--md-primary);
    border: 1px solid var(--md-primary);
}

.btn-outlined:hover::before {
    opacity: 0.08;
}

/* Botón de texto */
.btn-text {
    background-color: transparent;
    color: var(--md-primary);
    padding: 10px 12px;
}

.btn-text:hover::before {
    opacity: 0.08;
}

/* Tamaños de botones */
.btn-small {
    padding: 6px 16px;
    font-size: 12px;
    line-height: 16px;
}

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
    line-height: 24px;
}

/* Estados de botones */
.btn-primary:disabled,
.btn-secondary:disabled,
.btn-outlined:disabled,
.btn-text:disabled {
    opacity: 0.38;
    cursor: not-allowed;
    box-shadow: none;
}

/* ===== TARJETAS MATERIAL ===== */
.md-card {
    background-color: var(--md-surface);
    border-radius: var(--md-corner-medium);
    box-shadow: var(--md-elevation-1);
    overflow: hidden;
    transition: box-shadow var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.md-card:hover {
    box-shadow: var(--md-elevation-2);
}

.md-card-elevated {
    box-shadow: var(--md-elevation-3);
}

.md-card-elevated:hover {
    box-shadow: var(--md-elevation-4);
}

.md-card-header {
    padding: var(--md-spacing-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.md-card-content {
    padding: var(--md-spacing-md);
}

.md-card-actions {
    padding: var(--md-spacing-sm) var(--md-spacing-md);
    display: flex;
    gap: var(--md-spacing-sm);
    justify-content: flex-end;
}

/* ===== CAMPOS DE ENTRADA MATERIAL ===== */
.md-field,
.form-control {
    position: relative;
    margin-bottom: var(--md-spacing-md);
}

.md-input,
.form-control {
    width: 100%;
    padding: 16px 12px 8px 12px;
    border: 1px solid rgba(0, 0, 0, 0.38);
    border-radius: var(--md-corner-small);
    background-color: transparent;
    font-size: 16px;
    line-height: 24px;
    color: var(--md-on-surface);
    transition: all var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.md-input:focus,
.form-control:focus {
    outline: none;
    border-color: var(--md-primary);
    border-width: 2px;
    padding: 15px 11px 7px 11px;
}

.md-label,
.form-label {
    position: absolute;
    left: 12px;
    top: 16px;
    color: var(--md-on-surface-variant);
    font-size: 16px;
    line-height: 24px;
    pointer-events: none;
    transition: all var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.md-input:focus + .md-label,
.md-input:not(:placeholder-shown) + .md-label,
.form-control:focus + .form-label,
.form-control:not(:placeholder-shown) + .form-label {
    top: 4px;
    font-size: 12px;
    line-height: 16px;
    color: var(--md-primary);
}

/* ===== CHIPS MATERIAL ===== */
.md-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--md-spacing-sm);
    padding: 6px 12px;
    background-color: var(--md-surface-variant);
    color: var(--md-on-surface-variant);
    border-radius: var(--md-corner-small);
    font-size: 14px;
    line-height: 20px;
    font-weight: 500;
}

.md-chip-outlined {
    background-color: transparent;
    border: 1px solid var(--md-on-surface-variant);
}

.md-chip-selected {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
}

/* ===== NAVEGACIÓN MATERIAL ===== */
.md-navigation-bar {
    display: flex;
    background-color: var(--md-surface);
    box-shadow: var(--md-elevation-2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.md-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px 8px 8px;
    text-decoration: none;
    color: var(--md-on-surface-variant);
    transition: color var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.md-nav-item:hover,
.md-nav-item.active {
    color: var(--md-primary);
}

.md-nav-icon {
    font-size: 24px;
    margin-bottom: 4px;
}

.md-nav-label {
    font-size: 12px;
    line-height: 16px;
    font-weight: 500;
}

/* ===== COMPONENTES DE PROGRESO ===== */
.md-linear-progress {
    width: 100%;
    height: 4px;
    background-color: var(--md-surface-variant);
    border-radius: var(--md-corner-small);
    overflow: hidden;
}

.md-linear-progress-bar {
    height: 100%;
    background-color: var(--md-primary);
    transition: width var(--md-motion-duration-medium) var(--md-motion-easing-standard);
}

.md-circular-progress {
    width: 48px;
    height: 48px;
    display: inline-block;
    position: relative;
}

.md-circular-progress svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.md-circular-progress-circle {
    fill: none;
    stroke: var(--md-primary);
    stroke-width: 4;
    stroke-linecap: round;
    transition: stroke-dashoffset var(--md-motion-duration-medium) var(--md-motion-easing-standard);
}

/* ===== SNACKBARS Y ALERTAS ===== */
.md-snackbar {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--md-on-surface);
    color: var(--md-surface);
    padding: 14px 16px;
    border-radius: var(--md-corner-small);
    box-shadow: var(--md-elevation-3);
    font-size: 14px;
    line-height: 20px;
    z-index: 1000;
}

.md-alert {
    padding: var(--md-spacing-md);
    border-radius: var(--md-corner-medium);
    margin-bottom: var(--md-spacing-md);
}

.md-alert-info {
    background-color: rgba(25, 118, 210, 0.12);
    color: var(--md-primary);
    border: 1px solid rgba(25, 118, 210, 0.2);
}

.md-alert-success {
    background-color: rgba(76, 175, 80, 0.12);
    color: #2e7d32;
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.md-alert-warning {
    background-color: rgba(255, 152, 0, 0.12);
    color: #ef6c00;
    border: 1px solid rgba(255, 152, 0, 0.2);
}

.md-alert-error {
    background-color: rgba(244, 67, 54, 0.12);
    color: #c62828;
    border: 1px solid rgba(244, 67, 54, 0.2);
}

/* ===== UTILIDADES ===== */
.md-elevation-0 { box-shadow: none; }
.md-elevation-1 { box-shadow: var(--md-elevation-1); }
.md-elevation-2 { box-shadow: var(--md-elevation-2); }
.md-elevation-3 { box-shadow: var(--md-elevation-3); }
.md-elevation-4 { box-shadow: var(--md-elevation-4); }
.md-elevation-5 { box-shadow: var(--md-elevation-5); }

.md-surface { background-color: var(--md-surface); }
.md-primary { background-color: var(--md-primary); color: var(--md-on-primary); }
.md-secondary { background-color: var(--md-secondary); color: var(--md-on-secondary); }

.md-text-primary { color: var(--md-primary); }
.md-text-secondary { color: var(--md-secondary); }
.md-text-on-surface { color: var(--md-on-surface); }
.md-text-on-surface-variant { color: var(--md-on-surface-variant); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .md-button,
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .md-card {
        margin: 0 var(--md-spacing-sm);
    }
    
    .md-card-content {
        padding: var(--md-spacing-sm);
    }
}