@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --surface:               #fafaf4;
    --surface-container-low: #f4f4ee;
    --primary:               #4a6700;
    --primary-container:     #c1f651;
    --secondary-container:   #d2ed9a;
    --on-surface:            #1a1c19;
    --on-surface-variant:    #434936;
    --on-primary:            #ffffff;
    --on-secondary-container: #566c28;
    --income:                #16a34a;
    --expense:               #dc2626;
    --radius-md:   1rem;
    --radius-lg:   1.5rem;
    --radius-full: 9999px;
    --font-display: 'Manrope', system-ui, sans-serif;
    --font-body:    'Inter', system-ui, sans-serif;
    --shadow-modal: 0px 24px 48px rgba(26, 28, 25, 0.10);
}

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

body {
    font-family: var(--font-body);
    background: var(--surface);
    color: var(--on-surface);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ============================
   ANIMATED BACKGROUND BLOBS
   ============================ */
.blob-container {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.65;
    animation: blobFloat 22s infinite ease-in-out alternate;
}

.blob-1 {
    width: 560px; height: 560px;
    background: var(--primary-container);
    top: -15%; left: -12%;
    animation-delay: 0s;
}
.blob-2 {
    width: 480px; height: 480px;
    background: var(--secondary-container);
    bottom: -18%; right: -10%;
    animation-delay: -7s;
    animation-duration: 28s;
}

@keyframes blobFloat {
    0%   { transform: translate(0, 0) scale(1); }
    33%  { transform: translate(12vw, 8vh) scale(1.08); }
    66%  { transform: translate(-8vw, 16vh) scale(0.94); }
    100% { transform: translate(4vw, -4vh) scale(1.12); }
}

/* ============================
   TOP LOGO
   ============================ */
.top-logo {
    position: absolute;
    top: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-display);
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    z-index: 10;
    color: var(--on-surface);
    white-space: nowrap;
}
.top-logo i { font-size: 2rem; color: var(--primary); }

/* ============================
   CARD
   ============================ */
.login-wrapper {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    padding: 1.25rem;
}

.login-card {
    background: rgba(250, 250, 244, 0.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(195, 201, 176, 0.25);
    padding: 2.75rem 2.25rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    text-align: center;
}

.login-card h2 {
    font-family: var(--font-display);
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
    color: var(--on-surface);
}
.login-card p {
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
    margin-bottom: 2rem;
    line-height: 1.5;
}

/* ============================
   INPUTS
   ============================ */
.input-group {
    position: relative;
    margin-bottom: 0.875rem;
    text-align: left;
}
.input-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--on-surface-variant);
    font-size: 1.125rem;
    pointer-events: none;
}
.input-group input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.875rem;
    background: var(--surface-container-low);
    border: 1px solid transparent;
    color: var(--on-surface);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    appearance: none;
    -webkit-appearance: none;
}
.input-group input::placeholder { color: var(--on-surface-variant); font-weight: 400; }
.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74, 103, 0, 0.08);
}

/* ============================
   BUTTONS
   ============================ */
.btn-login {
    width: 100%;
    padding: 0.875rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    border-radius: var(--radius-full);
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.btn-login--primary {
    background: var(--primary);
    color: var(--on-primary);
}
.btn-login--primary:hover {
    background: #3a5100;
    box-shadow: 0 4px 16px rgba(74, 103, 0, 0.28);
    transform: translateY(-1px);
}
.btn-login--secondary {
    background: var(--secondary-container);
    color: var(--on-secondary-container);
}
.btn-login--secondary:hover {
    background: var(--primary-container);
    color: var(--on-surface);
    transform: translateY(-1px);
}

/* ============================
   DIVIDER
   ============================ */
.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--on-surface-variant);
    margin: 1.25rem 0;
    font-size: 0.8125rem;
    font-weight: 500;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(195, 201, 176, 0.4);
}
.divider::before { margin-right: 0.75em; }
.divider::after  { margin-left:  0.75em; }

/* ============================
   ALERTS
   ============================ */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
    text-align: left;
    line-height: 1.5;
}
.alert i { font-size: 1.125rem; flex-shrink: 0; margin-top: 0.0625rem; }
.alert-error   { background: rgba(220, 38, 38, 0.08); color: var(--expense); border: 1px solid rgba(220, 38, 38, 0.15); }
.alert-success { background: rgba(22, 163, 74, 0.08); color: var(--income);  border: 1px solid rgba(22, 163, 74, 0.15); }

/* ============================
   FORM SECTIONS
   ============================ */
.form-section { display: none; }
.form-section.active {
    display: block;
    animation: fadeUp 0.3s ease-out;
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 480px) {
    .blob-1 { width: 380px; height: 380px; }
    .blob-2 { width: 300px; height: 300px; }
    .login-card { padding: 2rem 1.5rem; }
    .top-logo { top: 1.5rem; font-size: 1.375rem; }
}