/*
 * Apple-style Minimalist Design System (BILANGIN)
 */

:root {
    /* Color Tokens - Light Mode */
    --bg-primary: #F5F5F7;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #E8E8ED;
    --border-color: #E5E5EA;
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --accent-blue: #007AFF;
    --accent-blue-soft: rgba(0, 122, 255, 0.1);
    --accent-green: #34C759;
    --accent-red: #FF3B30;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    --modal-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --border-radius-lg: 20px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
}

/* Dark Mode Overrides */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #1C1C1E;
        --bg-tertiary: #2C2C2E;
        --border-color: #3A3A3C;
        --text-primary: #F5F5F7;
        --text-secondary: #8E8E93;
        --accent-blue-soft: rgba(10, 132, 255, 0.15);
        --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        --modal-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    }
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100%;
    width: 100%;
    overflow: hidden;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: -webkit-fill-available;
    width: 100%;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    letter-spacing: -0.022em;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    opacity: 0.8;
}

/* Apple-style Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 100%;
    gap: 8px;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: #0062CC;
}

.btn-primary:active {
    transform: scale(0.98);
}

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

.btn-secondary:hover {
    opacity: 0.9;
}

.btn-secondary:active {
    transform: scale(0.98);
}

.btn-link {
    background: transparent;
    color: var(--accent-blue);
    padding: 6px 12px;
}

/* Input Fields */
.form-group {
    margin-bottom: 20px;
    width: 100%;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: 6px;
    padding-left: 4px;
}

.form-control {
    width: 100%;
    font-family: inherit;
    font-size: 15px;
    padding: 14px 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: var(--transition-smooth);
}

.form-control:focus {
    border-color: var(--accent-blue);
    background-color: var(--bg-secondary);
    box-shadow: 0 0 0 4px var(--accent-blue-soft);
}

/* Soft Cards */
.card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    padding: 30px;
    border: 1px solid var(--border-color);
}

/* Auth Center Screen Layout */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background-color: var(--bg-primary);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    text-align: center;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-type-selector {
    display: flex;
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-md);
    padding: 4px;
    margin-bottom: 24px;
    gap: 4px;
    border: 1px solid var(--border-color);
}

.type-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    padding: 10px 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    width: auto;
}

.type-btn.active {
    background-color: var(--bg-secondary);
    color: var(--accent-blue);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
    .type-btn.active {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        background-color: var(--bg-tertiary);
    }
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    border-radius: 20px;
    background: linear-gradient(135deg, #007AFF, #00C6FF);
    color: #FFFFFF;
    margin-bottom: 20px;
    box-shadow: 0 8px 24px rgba(0, 122, 255, 0.3);
}

.auth-logo svg {
    width: 32px;
    height: 32px;
}

.auth-title {
    font-size: 26px;
    font-weight: var(--font-weight-bold);
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* Slide Up Animation */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Notification banner toast */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    z-index: 9999;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    box-shadow: var(--modal-shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast-success i { color: var(--accent-green); }
.toast-error i { color: var(--accent-red); }

/* Custom Badge */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: var(--font-weight-bold);
    border-radius: 10px;
}

.badge-blue {
    background-color: var(--accent-blue);
    color: #FFFFFF;
}

.badge-gray {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Hide utility classes */
.hidden {
    display: none !important;
}