/* iOS-style design with glassmorphism */
:root {
    /* Light mode colors */
    --primary-color: #0071e3;
    --secondary-color: #34c759;
    --accent-color-1: #ff375f;
    --accent-color-2: #af52de;
    --accent-color-3: #5e5ce6;
    --text-color: #333;
    --light-text: #777;
    --background: #f5f5f7;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --border-color: rgba(255, 255, 255, 0.18);
    --border-radius: 16px;
    
    /* Dark mode colors */
    --dark-background: #121212;
    --dark-text-color: #f5f5f7;
    --dark-light-text: #aaa;
    --dark-glass-bg: rgba(30, 30, 30, 0.7);
    --dark-card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --dark-border-color: rgba(255, 255, 255, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--background);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e7eb 100%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
}

/* Dark mode class that will be toggled */
body.dark-mode {
    background-color: var(--dark-background);
    background: linear-gradient(135deg, #121212 0%, #1e1e1e 100%);
    color: var(--dark-text-color);
}

/* Dark mode toggle button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    cursor: pointer;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-color);
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

body.dark-mode .theme-toggle {
    color: var(--dark-text-color);
    background: rgba(255, 255, 255, 0.1);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Background styling */
.background {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.6;
}

.shape:nth-child(1) {
    width: 500px;
    height: 500px;
    top: -250px;
    right: -100px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color-3));
    animation: float 8s ease-in-out infinite alternate;
}

.shape:nth-child(2) {
    width: 400px;
    height: 400px;
    bottom: -200px;
    left: -100px;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color-2));
    animation: float 12s ease-in-out infinite alternate-reverse;
}

/* Add a third shape for more color */
.background::after {
    content: '';
    position: absolute;
    width: 350px;
    height: 350px;
    top: 50%;
    right: 20%;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--accent-color-1), var(--accent-color-2));
    filter: blur(80px);
    opacity: 0.4;
    animation: float 15s ease-in-out infinite alternate;
}

/* Dark mode adjustments for background shapes */
body.dark-mode .shape:nth-child(1) {
    opacity: 0.4;
    background: linear-gradient(45deg, #0f3460, #214177);
}

body.dark-mode .shape:nth-child(2) {
    opacity: 0.4;
    background: linear-gradient(45deg, #401a54, #5a2175);
}

body.dark-mode .background::after {
    opacity: 0.3;
    background: linear-gradient(45deg, #541a1a, #752121);
}

@keyframes float {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(20px, -20px);
    }
}

/* Container styling */
.container {
    width: 100%;
    max-width: 400px;
    padding: 15px;
    position: relative;
    z-index: 1;
}

/* Glassmorphism card effect */
.glass, .glass-card {
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: 25px;
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

body.dark-mode .glass, body.dark-mode .glass-card {
    background: var(--dark-glass-bg);
    box-shadow: var(--dark-card-shadow);
    border: 1px solid var(--dark-border-color);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px 0 rgba(31, 38, 135, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

body.dark-mode .glass-card:hover {
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Logo styling */
.logo-container {
    text-align: center;
    padding: 15px;
}

.logo {
    height: 40px;
    margin-bottom: 10px;
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 5px;
    text-shadow: 0 2px 10px rgba(0, 113, 227, 0.2);
}

body.dark-mode h1 {
    color: var(--primary-color);
    text-shadow: 0 2px 10px rgba(0, 113, 227, 0.4);
}

h2 {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 20px;
    text-align: center;
}

body.dark-mode h2 {
    color: var(--dark-text-color);
}

/* Form styling */
.form-group {
    position: relative;
    margin-bottom: 20px;
}

label {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--light-text);
}

body.dark-mode label {
    color: var(--dark-light-text);
}

input, select {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    font-size: 16px;
    transition: all 0.3s ease;
}

body.dark-mode input, body.dark-mode select {
    background: rgba(50, 50, 50, 0.8);
    border: 1px solid var(--dark-border-color);
    color: var(--dark-text-color);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.25);
}

body.dark-mode input:focus, body.dark-mode select:focus {
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.25);
}

.btn-primary {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color-3));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-color-3), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 113, 227, 0.3);
}

/* Form footer */
.form-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
    color: var(--light-text);
}

body.dark-mode .form-footer {
    color: var(--dark-light-text);
}

.form-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

body.dark-mode .form-footer a {
    color: var(--primary-color);
}

.form-footer a:hover {
    text-decoration: underline;
}

/* Dashboard styling - will be used later */
.dashboard {
    display: none;
    flex-direction: column;
    width: 100%;
    max-width: 1200px;
    padding: 20px;
}

.sidebar {
    width: 250px;
    padding: 20px;
}

.content {
    flex: 1;
    padding: 20px;
}

/* Responsive styles */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .glass-card {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.3rem;
    }
    
    h2 {
        font-size: 1.1rem;
    }
    
    input, select, .btn-primary {
        padding: 12px;
    }
}

/* Dark mode media query for system preference */
@media (prefers-color-scheme: dark) {
    body.auto-theme {
        background-color: var(--dark-background);
        background: linear-gradient(135deg, #121212 0%, #1e1e1e 100%);
        color: var(--dark-text-color);
    }
    
    body.auto-theme .glass, body.auto-theme .glass-card {
        background: var(--dark-glass-bg);
        box-shadow: var(--dark-card-shadow);
        border: 1px solid var(--dark-border-color);
    }
    
    body.auto-theme .glass-card:hover {
        border: 1px solid rgba(255, 255, 255, 0.15);
    }
    
    body.auto-theme h1 {
        color: var(--primary-color);
        text-shadow: 0 2px 10px rgba(0, 113, 227, 0.4);
    }
    
    body.auto-theme h2 {
        color: var(--dark-text-color);
    }
    
    body.auto-theme label {
        color: var(--dark-light-text);
    }
    
    body.auto-theme input, body.auto-theme select {
        background: rgba(50, 50, 50, 0.8);
        border: 1px solid var(--dark-border-color);
        color: var(--dark-text-color);
    }
    
    body.auto-theme .form-footer {
        color: var(--dark-light-text);
    }
}