/* style.css - Dehim.dev Final Edition */

/* 1. RESET A OPRAVA ZAROVNÁNÍ (Řeší to šoupání bublin) */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-color: #0d1117;      
    --card-bg: #161b22;      
    --accent: #8b5cf6;       /* Tvůj fialový odstín */
    --accent-hover: #7c3aed;
    --text-main: #ffffff;
    --text-dim: #8b949e;
    --error: #f85149;
    --success: #3fb950;
    --border: #30363d;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

/* 2. KARTA FORMULÁŘE */
.auth-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    width: 100%;
    max-width: 400px; /* Ideální šířka pro login */
}

h2 { 
    margin-bottom: 1.8rem;
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(90deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

/* 3. VSTUPY A TLAČÍTKA */
input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 1rem;
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: white;
    font-size: 1rem;
    transition: all 0.2s ease;
}

input:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
    background: #12181f;
}

button {
    width: 100%;
    padding: 14px;
    margin-top: 0.5rem;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}

button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

/* 4. CHYBOVÉ A ÚSPĚŠNÉ HLÁŠKY */
.msg {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    border-left: 4px solid;
    text-align: left;
}

.msg-error { 
    background: rgba(248, 81, 73, 0.1); 
    color: #ff7b72; 
    border-color: var(--error); 
}

.msg-success { 
    background: rgba(63, 185, 80, 0.1); 
    color: #7ee787; 
    border-color: var(--success); 
}

/* 5. TEXTY A ODKAZY */
p { 
    margin-top: 1.5rem;
    color: var(--text-dim);
    font-size: 0.9rem;
}

a { 
    color: var(--accent); 
    text-decoration: none; 
    font-weight: 500;
    transition: color 0.2s;
}

a:hover { 
    color: var(--text-main);
    text-decoration: underline; 
}