:root {
    /* Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f9f9f9;
    --text-primary: #000000;
    --text-secondary: #666666;
    --border-color: #eeeeee;

    --blue-electric: #0070f3;
    --yellow-electric: #f5a623;
    /* Naranja en claro para contraste */
    --red-coral: #ff4d4d;
    --green-success: #00c853;

    /* Category Colors */
    --cat-salud: #00b894;
    --cat-trabajo: #e17055;
    --cat-personal: #6c5ce7;

    --radius-sm: 4px;
    --radius-md: 8px;
    --transition: 200ms ease;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    --bg-primary: #000000;
    --bg-secondary: #111111;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --border-color: #333333;

    --yellow-electric: #ffea00;
    /* Amarillo eléctrico en oscuro */
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition), color var(--transition);
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    transition: all var(--transition);
}

input {
    font-family: inherit;
}

/* Common Layout */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* Utilities */
.text-xs {
    font-size: 0.75rem;
}

.text-sm {
    font-size: 0.875rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.font-medium {
    font-weight: 500;
}

.font-bold {
    font-weight: 700;
}

.text-secondary {
    color: var(--text-secondary);
}

.text-blue {
    color: var(--blue-electric);
}

.text-yellow {
    color: var(--yellow-electric);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    margin-bottom: 2rem;
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    z-index: 10;
}

.header-actions {
    display: flex;
    gap: 1.25rem;
}

.header-icon {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    transition: color var(--transition);
}

.header-icon:hover {
    color: var(--text-primary);
}

/* Streak Hero */
.streak-hero {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeIn 0.6s ease;
}

.streak-number-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.streak-number {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1;
}

.streak-fire {
    width: 4rem;
    height: 4rem;
}

.streak-label {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Mini Stats */
.mini-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Coach Card */
.coach-card {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.coach-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.coach-response {
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    line-height: 1.6;
    display: none;
}

.btn-coach {
    border: 1px solid var(--blue-electric);
    color: var(--blue-electric);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.btn-coach:hover {
    background-color: rgba(0, 112, 243, 0.1);
}

/* Controls */
.controls-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.week-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

/* Habit Grid & Cards */
.habit-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.habit-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    transition: transform var(--transition);
    position: relative;
}

.habit-card:hover {
    transform: translateY(-2px);
}

.habit-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.habit-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.category-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.habit-stats {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.weekly-circles {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.75rem;
}

.day-circle-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

.day-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.day-circle {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.day-circle.completed {
    background-color: var(--category-color, var(--blue-electric));
    border-color: var(--category-color, var(--blue-electric));
}

.day-circle.completed::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.8rem;
}

.day-circle.future {
    opacity: 0.3;
    cursor: not-allowed;
    background-color: var(--border-color);
}

.day-circle:active:not(.future) {
    transform: scale(0.9);
}

.habit-options {
    position: absolute;
    top: 1rem;
    right: 1rem;
    opacity: 0;
    transition: opacity var(--transition);
}

.habit-card:hover .habit-options {
    opacity: 1;
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--blue-electric);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 112, 243, 0.3);
    font-size: 24px;
    z-index: 100;
}

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

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 2rem;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--blue-electric);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

/* Category Colors */
.category-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background-color: var(--bg-primary);
}

.cat-salud {
    border-color: var(--cat-salud);
    color: var(--cat-salud);
    background-color: rgba(0, 184, 148, 0.1);
}

.cat-trabajo {
    border-color: var(--cat-trabajo);
    color: var(--cat-trabajo);
    background-color: rgba(225, 112, 85, 0.1);
}

.cat-personal {
    border-color: var(--cat-personal);
    color: var(--cat-personal);
    background-color: rgba(108, 92, 231, 0.1);
}


/* Stats Screen Specifics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-group {
    margin-bottom: 2.5rem;
}

.stat-group h2 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
}

.progress-item {
    margin-bottom: 1.25rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.progress-bar-bg {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    transition: width 1s ease;
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
}