/* ============================================================
   Kent2Pay — Main CSS
   Apple-inspired minimalist design
   ============================================================ */

:root {
    --bg-primary:    #ffffff;
    --bg-secondary:  #f5f5f7;
    --bg-tertiary:   #e8e8ed;
    --text-primary:   #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary:  #aeaeb2;
    --accent:         #0071e3;
    --accent-hover:   #0077ed;
    --accent-light:   #e8f0fc;
    --color-success:  #34c759;
    --color-warning:  #ff9f0a;
    --color-danger:   #ff3b30;
    --color-neutral:  #8e8e93;
    --color-purple:   #af52de;
    --border:         #d2d2d7;
    --border-radius:  12px;
    --border-radius-sm: 8px;
    --shadow:         0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover:   0 4px 20px rgba(0, 0, 0, 0.12);
    --transition:     0.2s ease;
}

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

html { font-size: 15px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
                 "Segoe UI", Helvetica, Arial, sans-serif;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---- Login ---- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--bg-secondary);
}

.login-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 40px 36px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    text-align: center;
}

.login-logo {
    width: 56px;
    height: 56px;
    background: var(--accent);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.logo-mark {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.login-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.login-form { text-align: left; }

.field { margin-bottom: 16px; }

.field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.field input {
    width: 100%;
    border: 1.5px solid var(--border);
    border-radius: var(--border-radius-sm);
    padding: 10px 14px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.field input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* ---- Buttons ---- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 11px 20px;
    font-size: 15px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    min-height: 44px;
    touch-action: manipulation;
}

.btn-primary:hover  { background: var(--accent-hover); box-shadow: 0 2px 8px rgba(0,113,227,0.3); }
.btn-primary:active { transform: translateY(1px); box-shadow: none; }

.btn-full { width: 100%; margin-top: 8px; }

/* ---- Alerts ---- */
.alert {
    border-radius: var(--border-radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    margin-bottom: 16px;
    text-align: left;
}

.alert-error {
    background: rgba(255, 59, 48, 0.08);
    color: var(--color-danger);
    border: 1px solid rgba(255, 59, 48, 0.2);
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
    .login-card { padding: 32px 24px; }
}