:root {
  --primary: #4a8ab5;
  --primary-dark: #2e5f80;
  --primary-deep: #1b3b6f;
  --primary-light: #e6f2fa;
  --secondary: #75808a;
  --success: #4CAF50;
  --danger: #e53e3e;
  --info: #2196F3;
  --warning: #ff9800;
  --dark: #2d3748;
  --light: #f8fafc;
  --link: #4a8ab5;
  --link-hover: #1b3b6f;
  --gray: #718096;
  --white: #ffffff;
  --black: #1a202c;
  --border-color: #e2e8f0;
  --input-border: #cbd5e1;
  --input-bg: #f8fafc;
  --card-bg: #ffffff;
  --card-shadow: 0 20px 40px -15px rgba(15, 35, 65, 0.15), 0 4px 12px rgba(0, 0, 0, 0.03);
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #edf4fa;
    background-image: 
        radial-gradient(at 10% 10%, rgba(74, 138, 181, 0.22) 0px, transparent 50%),
        radial-gradient(at 90% 10%, rgba(27, 59, 111, 0.18) 0px, transparent 50%),
        radial-gradient(at 50% 90%, rgba(60, 119, 158, 0.15) 0px, transparent 50%),
        radial-gradient(at 80% 80%, rgba(13, 30, 56, 0.12) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--dark);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: 100vh;
    padding-top: 4vh;
}

#login-wrapper {
    width: 100%;
    max-width: 440px;
    padding: 16px;
    margin: 0 auto;
}

#login-logo {
    margin-bottom: 16px;
    text-align: center;
}

#login-logo img {
    max-width: 260px;
    height: auto;
    filter: drop-shadow(0 2px 8px rgba(27, 59, 111, 0.12));
    transition: transform 0.3s ease;
}

#login-logo img:hover {
    transform: scale(1.02);
}

#login-box {
    width: 100%;
    margin: 0 auto;
    border-radius: 16px;
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(74, 138, 181, 0.18);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#login-box header {
    padding: 24px 28px 12px 28px;
    text-align: center;
    background: transparent;
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

#login-box header h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-deep);
    letter-spacing: -0.3px;
}

.form-container {
    padding: 20px 28px 18px 28px;
}

.form-container form {
    max-width: 100%;
    margin: 0 auto;
}

.form-row {
    margin-bottom: 13px;
}

.form-row label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon .input-icon-left {
    position: absolute;
    left: 14px;
    color: #94a3b8;
    font-size: 15px;
    pointer-events: none;
    transition: color 0.2s ease;
    z-index: 2;
}

.w3-input.form-control {
    width: 100%;
    padding: 11px 14px;
    font-size: 14px;
    line-height: 1.4;
    color: #1e293b;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    box-sizing: border-box;
    transition: all 0.2s ease-in-out;
    outline: none;
}

.w3-input.form-control::placeholder {
    color: #94a3b8;
    opacity: 1;
}

.w3-input.form-control.has-left-icon {
    padding-left: 40px;
}

.w3-input.form-control:focus {
    background-color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74, 138, 181, 0.22);
}

.input-with-icon:focus-within .input-icon-left {
    color: var(--primary);
}

.password-wrapper {
    position: relative;
}

.field-icon.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    cursor: pointer;
    padding: 6px;
    font-size: 15px;
    transition: color 0.2s ease, transform 0.2s ease;
    z-index: 3;
}

.field-icon.toggle-password:hover {
    color: var(--primary-deep);
}

.button-row {
    margin-top: 18px;
    margin-bottom: 0;
}

.btn-login-custom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 600;
    color: #ffffff !important;
    background: linear-gradient(135deg, #4a8ab5 0%, #357199 100%) !important;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(74, 138, 181, 0.28);
    text-decoration: none;
}

.btn-login-custom:hover {
    background: linear-gradient(135deg, #3c779e 0%, #295c80 100%) !important;
    box-shadow: 0 6px 18px rgba(74, 138, 181, 0.38);
    transform: translateY(-1px);
}

.btn-login-custom:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(74, 138, 181, 0.25);
}

#login-footer {
    padding: 16px 28px;
    background-color: #f8fafc;
    border-top: 1px solid #e2e8f0;
    font-size: 13px;
}

#login-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

#login-footer a:hover {
    color: var(--primary-deep);
    text-decoration: underline;
}

.box-sub-footer {
    padding: 12px 28px 16px 28px;
    font-size: 11px;
    text-align: center;
    color: #94a3b8;
    background-color: #f8fafc;
    border-top: 1px solid rgba(226, 232, 240, 0.5);
}

.box-sub-footer a {
    color: #64748b;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s ease;
}

.box-sub-footer a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* Alert panels inside login box */
.w3-panel {
    border-radius: 8px !important;
    margin-bottom: 16px;
}

/* Keep informational forgot-password messages compact and unobtrusive. */
.forgot-message.w3-pale-blue {
    margin-top: 0;
    padding: 0 !important;
    color: var(--primary-deep);
    background-color: transparent !important;
    border-color: transparent !important;
}

.forgot-message.w3-pale-blue p {
    margin: 0 0 16px;
    font-size: 14px;
    line-height: 1.45;
}

@media (max-width: 480px) {
    #login-wrapper {
        padding: 16px 12px;
    }
    #login-box header {
        padding: 20px 20px 10px 20px;
    }
    .form-container {
        padding: 16px 20px 16px 20px;
    }
    #login-footer {
        padding: 14px 20px;
    }
}