/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-font-smoothing: antialiased; }
html, body { margin: 0 !important; padding: 0 !important; }

:root {
    --color-primary: #FF8800;
    --color-primary-dark: #E67A00;
    --color-brick: #CC3300;
    --color-mustard: #FFBF00;
    --color-white: #FFFFFF;
    --color-bg: #F0F2F5;
    --color-text-title: #1A1D1E;
    --color-text-body: #7D8489;
    --color-success: #2ECC71;
    --color-error: #E74C3C;
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-card: 28px;
    --radius-button: 20px;
}

/* Layout */
body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-primary) 0%, #FF9500 50%, var(--color-mustard) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

/* Login Card */
.login-card {
    background: var(--color-white);
    border-radius: var(--radius-card);
    padding: 40px 32px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

/* Brand */
.brand {
    text-align: center;
    margin-bottom: 32px;
}

.brand-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-mustard) 100%);
    border-radius: var(--radius-button);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 8px 24px rgba(255,136,0,0.3);
}

.brand-icon .material-symbols-rounded {
    color: var(--color-white);
    font-size: 32px;
}

.brand-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 28px;
    color: var(--color-text-title);
    letter-spacing: -0.02em;
}

.brand-subtitle {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 14px;
    color: var(--color-text-body);
    margin-top: 4px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.tab-btn {
    flex: 1;
    padding: 14px 20px;
    background: var(--color-bg);
    border: none;
    border-radius: var(--radius-button);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text-body);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover { background: #E5E7EB; }

.tab-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Forms */
.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 13px;
    color: var(--color-text-body);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    background: var(--color-bg);
    border: 2px solid transparent;
    border-radius: var(--radius-button);
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--color-text-title);
    outline: none;
    transition: all 0.2s;
}

.form-input:focus {
    border-color: var(--color-primary);
    background: var(--color-white);
}

.form-input::placeholder {
    color: var(--color-text-body);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-mustard) 100%);
    border: none;
    border-radius: var(--radius-button);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 16px;
    color: var(--color-white);
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 16px rgba(255,136,0,0.3);
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255,136,0,0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Alerts */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-button);
    font-family: var(--font-body);
    font-size: 14px;
    margin-bottom: 16px;
    display: none;
}

.alert.success {
    background: #DFFDE7;
    color: var(--color-success);
    display: block;
}

.alert.error {
    background: #FDE7E7;
    color: var(--color-error);
    display: block;
}

/* Form Sections */
.form-section { display: none; }
.form-section.active { display: block; }

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Material Icons */
.material-symbols-rounded {
    font-family: 'Material Symbols Rounded';
    font-size: 20px;
    vertical-align: middle;
}