/**
 * Portfolio Manager - Main Stylesheet
 * Taiga-Helper Design System - Vanilla CSS (No framework)
 *
 * This file contains base styles only.
 * Design tokens are in variables.css
 * Layout styles are in layout.css
 * Button styles are in buttons.css
 */

/* ============================================
   CSS RESET
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    color-scheme: light only;
    -webkit-text-size-adjust: 100%;
    /* Prevent layout shift when scrollbar appears/disappears */
    overflow-y: scroll;
}

html, body {
    height: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-text-secondary);
    background-color: var(--color-bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   BASE LAYOUT STRUCTURE
   ============================================ */
body.app-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
}

h1 { font-size: var(--font-size-4xl); margin-bottom: var(--space-6); }
h2 { font-size: var(--font-size-3xl); margin-bottom: var(--space-5); }
h3 { font-size: var(--font-size-xl); margin-bottom: var(--space-4); }

p {
    margin-bottom: var(--space-4);
}

/* ============================================
   LINKS
   ============================================ */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-3xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    border: 1px solid transparent;
    transition: all var(--transition-slow);
}

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

.card-header {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text-primary);
}

.card-footer {
    margin-top: var(--space-4);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border-light);
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
}

/* Page Info Card */
.page-info {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-md);
}

.page-info code {
    background: var(--color-bg-section);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-base);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
input,
select,
textarea {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-placeholder);
}

/* Select with Arrow */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-8);
    cursor: pointer;
}

label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-md);
}

/* ============================================
   TABLES
   ============================================ */
.table-container {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-md);
}

th, td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

th {
    background: var(--color-bg-section);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tbody tr {
    background: var(--color-bg-card);
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: var(--color-bg-section);
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
}

/* Status Badges */
.status-badge {
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: white;
}

.status-badge--info { background-color: var(--color-info); }
.status-badge--success { background-color: var(--color-success); }
.status-badge--warning { background-color: var(--color-warning); }
.status-badge--error { background-color: var(--color-error); }

/* ============================================
   ALERTS & FEEDBACK
   ============================================ */
.alert {
    padding: var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    margin-bottom: var(--space-5);
}

.alert-error {
    background: var(--color-error-light);
    color: var(--color-error-dark);
    border-left: 4px solid var(--color-error-dark);
}

.alert-success {
    background: var(--color-success-light);
    color: var(--color-success);
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background: var(--color-warning-light);
    color: #92400e;
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background: var(--color-bg-accent);
    color: var(--color-primary);
    border-left: 4px solid var(--color-primary);
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: 60px var(--space-5);
    background: var(--color-bg-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: var(--space-5);
}

.empty-state h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.empty-state p {
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ============================================
   LOADING SPINNER
   ============================================ */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border-default);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }