/* ============================================
   BLOKSTAD - Main Styles
   ============================================ */

:root {
    --sky-blue: #31B7E9;
    --dark-blue: #0682B4;
    --grass-green: #4CAF50;
    --dark-green: #2E7D32;
    --warm-orange: #FF6B35;
    --golden-yellow: #FFD700;
    --danger-red: #FF4444;
    --prison-grey: #696969;
    --white: #FFFFFF;
    --bg-gradient: linear-gradient(180deg, #87CEEB 0%, #b5e8b5 100%);
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
    --radius: 16px;
    --radius-sm: 8px;
}

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

html, body {
    height: 100%;
}

body {
    font-family: 'Nunito', 'Segoe UI', sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: #2c3e50;
    min-height: 100vh;
}

/* Typography */
h1 { font-size: 2.2rem; font-weight: 800; color: var(--dark-blue); }
h2 { font-size: 1.6rem; font-weight: 700; color: var(--dark-blue); }
h3 { font-size: 1.2rem; font-weight: 700; }

/* Card container */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    max-width: 480px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    text-decoration: none;
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--sky-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--dark-blue);
}

.btn-success {
    background: var(--grass-green);
    color: white;
}

.btn-success:hover {
    background: var(--dark-green);
}

.btn-orange {
    background: var(--warm-orange);
    color: white;
}

.btn-danger {
    background: var(--danger-red);
    color: white;
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.3rem;
    border-radius: var(--radius);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Form elements */
.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--dark-blue);
    font-size: 0.95rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--sky-blue);
}

/* Alert messages */
.alert {
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 0.95rem;
}

.alert-error {
    background: #ffe0e0;
    color: #c62828;
    border: 2px solid #ef9a9a;
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
    border: 2px solid #a5d6a7;
}

.alert-info {
    background: #e3f2fd;
    color: #0682B4;
    border: 2px solid #90caf9;
}

/* Tab navigation */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid var(--sky-blue);
}

.tab {
    flex: 1;
    padding: 0.8rem;
    text-align: center;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    transition: background 0.2s, color 0.2s;
    background: white;
    color: var(--sky-blue);
    border: none;
}

.tab.active {
    background: var(--sky-blue);
    color: white;
}

.tab:hover:not(.active) {
    background: #e3f2fd;
}

/* PIN input */
.pin-container {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
    margin: 0.5rem 0;
}

.pin-digit {
    width: 60px;
    height: 70px;
    border: 3px solid #e0e0e0;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-blue);
    transition: border-color 0.2s;
    -webkit-appearance: none;
}

.pin-digit:focus {
    outline: none;
    border-color: var(--sky-blue);
    box-shadow: 0 0 0 3px rgba(49, 183, 233, 0.2);
}

/* Number pad for kids */
.numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    max-width: 280px;
    margin: 1rem auto;
}

.numpad-btn {
    padding: 1rem;
    font-size: 1.5rem;
    font-weight: 800;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    background: white;
    color: var(--dark-blue);
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.numpad-btn:hover {
    background: #e3f2fd;
}

.numpad-btn:active {
    transform: scale(0.95);
    background: var(--sky-blue);
    color: white;
}

.numpad-btn.backspace {
    font-size: 1.2rem;
}

/* Page layout */
.page-center {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

.page-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.logo-text {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark-blue);
    letter-spacing: 2px;
}

.logo-subtitle {
    font-size: 1rem;
    color: var(--sky-blue);
    font-weight: 600;
}

/* Utility */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.hidden { display: none !important; }

/* Invite code display */
.invite-code {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 4px;
    color: var(--warm-orange);
    background: #fff3e0;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-sm);
    border: 3px dashed var(--warm-orange);
    display: inline-block;
    user-select: all;
}

/* Responsive */
@media (max-width: 520px) {
    .card {
        padding: 1.2rem;
        margin: 0 0.5rem;
    }
    h1 { font-size: 1.8rem; }
    .logo-text { font-size: 2rem; }
    .pin-digit {
        width: 50px;
        height: 60px;
        font-size: 1.6rem;
    }
}